jump-the verb-stem used in Comb.: jump-ball, jump ballBasketball, a ball thrown between two opposing players by the referee; jump-cord, a cord to be jumped over; jump-coupling, a coupling of which the box consists of a collar of metal bored to fit the two connected ends of the shafts =thimble-coupling; jump-cut, jump cutCinemat. and Television(seequot. 1953); also transf., attrib.and asv. trans.andintr.; jump-jet, jump jet, a vertical take-off/landing jet aircraft; jump jockeyHorse-racing, a jockey who rides in steeplechases; jump-joint, (a) a joint in which the parts are welded end to end together, a butt-joint (see butt n.7 2); (b) a flush-joint in which the edges of the plates or planking are laid close together and make a smooth surface; hence jump-jointeda.; jump-lead, each of a pair of leads for conveying electric charge from one car battery to another during a jump start; jump-ring, a wire ring made by bringing the two ends together without welding; jump-rocks, a catostomoid fish, Moxostoma cervinum, of southern U.S.; jump-rope, jump rope (chiefly N. Amer.), a skipping-rope; jump-seat, (a) a movable carriage-seat; also adj.andn. (ellipt.) (a carriage) provided with such a seat which can be brought into use when required; (b) a folding seat in a motor car; also transf.; jump-shot, jump shot, (a) Billiards, etc., a shot which causes the ball to jump; (b) Basketball(seequot. 1961); jump-spark, jump spark, a spark produced by the application of a potential difference to two electrical conductors separated by a narrow gap; usu.attrib., designating devices or methods employing this; jump-startv. trans., to start (a vehicle) using the charge from another vehicle's battery, by means of jump-leads; hence also as n., the starting of a vehicle in this way; jump-stroke (Croquet): see quot.; jump take-offAeronaut., a vertical take-off; jump-turn, jump turn, a turn made while jumping; spec. in Skiing; jump-weld, a weld effected by hammering together the heated ends of two pieces of metal; a butt-weld; hence jump-weldv.1924W. E. Meanwell Sci. of Basket Ball 62 During scrimmage watch the tip-off formations and also those for *jump ball and from out of bounds.1939Jourdet & Hashagen Mod. Basketball xi. 63 Cover your man well on all jump balls. If you are jumping someone else's man, make sure he covers yours.1969Eugene (Oregon) Register-Guard 3 Dec. 3D/1 The game had started on a technical foul when the Beavers were awarded a free throw instead of the usual jump ball.1953K. Reisz Technique Film Editing 280 *Jump cut, cut which breaks continuity of time by jumping forward from one part of an action to another obviously separated from the first by an interval of time.1962Listener 9 Aug. 223/1 The eye-jerking, ear-jarring jump cuts which result when the commercials are removed from imported American programmes.1962Punch 19 Sept. 428/1 Harsh jump-cuts that might almost be breaks in the film.1964Observer 12 July 25/5 A jump-cut speeded-up sequence mostly shot from a helicopter.1965Time 18 June 80 He recklessly jump-cuts from scene to scene, using gimmicky transitions.1968P. Dickinson Skin Deep vii. 130 The soft lines of the black visage jump-cut into wary maturity.1966Punch 6 July 26/2 The restless, *jump-cutting style is sometimes disconcerting—one takes a second or two to realise that an expected bridging passage has been waived.1972Times Lit.Suppl. 9 June 649/4 A series of frenzied incidents..a matter of jump-cuts and unfinished sentences suggestive of a painful collaboration between Ken Kesey and Ford Madox Ford.1974Ibid. 14 June 629/4 The reader adjusts soon enough to the breakneck jump-cuts of the first few pages.1975New Yorker 20 Jan. 79/1 Once Trintignant takes over as the filmmaker, the movie loses its playful movie-within-a-movie spirit, and the technique, which had been a sprinting, jump-cutting shorthand that didn't take itself too seriously, turns glassy smooth.1964Sunday Times 12 Jan. 1/4 The Ministry of Defence delays ordering the revolutionary Hawker P. 1154 ‘*jump jet’ fighter.1970New Scientist 19 Feb. 362/1 The trials that the RAF and RN are now conducting on the employment at sea of the Harrier ‘jump-jet’.1973Guardian 18 Apr. 24/5 A command cruiser designed to carry jump-jet aircraft.1970J. Leach Rider on Stand ix. 89 *Jump jockeys are a devil-may-care bunch. They accept the hazards of their profession in a happy-go-lucky manner.1972Times 29 Nov. 1/1 Michael Eddery, the jump jockey,..had his right leg amputated.1973Scotsman 7 Aug. 15/6 Barry Brogan's dispute with the Jockey Club over renewal of his jump jockey's licence ended amicably.1874Thearle Naval Archit. 95 Among these early systems [of combining the bottom plates] was that of flush or *jump joints and butts connected by edge strips and butt straps on the inside surface.1867Smyth Sailor's Word-bk., *Jump-jointed, when the plates of an iron vessel are flush, as in those that are carvel-built.1969Motor 15 Nov. 85 (caption) KL Automotive products Ltd. have introduced two new battery booster cables (*jump leads in garage jargon).1976Drive Nov.–Dec. 40/2 Battery jump-leads... Hitch up your car to theirs with these thick, high-current-carrying leads.1980Know about your Car (A.A.) 284/1 On an automatic car with a flat battery use jump leads.[1805G. McIndoe Poems & Songs 40 At three year auld he crys for whips,..And guns, and girrs, and jumpin'-rapes.]1834Emerson Jrnl. (1964) IV. 359 Thus is one reminded of the children's prayers who in confessing their sins, say, ‘Yes, I did take the *jumprope from Mary.’1869L. M. Alcott Little Women II. x. 147 Mr. Bhaer down on his hands and knees..Kitty leading him with a jump-rope.1969R. D. Abrahams (title) Jump-rope rhymes.1973Islander (Victoria, B.C.) 8 Apr. 8/1 Spring brings activity—jacks and jump ropes pop up with the flowers.1864Webster, *Jump-seat, a carriage constructed with a movable seat;..a movable carriage-seat.Ibid., Jump-seat, a., having a movable seat; as, a jump-seat rock-away.1875Knight Dict.Mech., Jump-seat,..a kind of open buggy which has a shifting seat or seats... It may be arranged as a double or single seat vehicle.1931Automotive Abstr. Aug. 238/2 Treatment of the jump-seat explains unique problems presented by this accessory.1963Mrs. L. B. Johnson White House Diary 24 Nov. (1970) 8 We all got into the same limousine—Mrs. Kennedy and Lyndon in the back seat, the Attorney General and I in the jump seats.1972Guardian 18 Sept. 14/1, I was sitting in the jump seat... We were racing through the city.1973Black Panther 6 Oct. 10/1 Only the jump seat for stewardesses was behind him.1909P. A. Vaile Mod. Golf 92 This shot has its exact counterpart on the billiard table in the useful *jump-shot.1961J. S. Salak Dict.Amer. Sports 250 Jump shot (basketball), a shot taken with both feet off the floor. It can be made with one or two hands with the one-handed shot in general use in the National Basketball Association.1966Miller & Thorp Croquet 174 Jump shot, a shot in which the ball is struck so that it leaves the ground.1969New Yorker 14 June 79/1 You go through Harlem and you'll see kids less than five feet tall with pretty good jump shots and hook shots.1974Anderson (S. Carolina) Independent 20 Apr. 8A/1 New York's Julius Erving, known as Dr. J., drilled the 20-foot jump shot that gave the Nets their 3–0 margin in the series with an 89–87 victory at Louisville on Wednesday.1908J. H. Adams in Onker & Baker Harper's How to understand Electr. Work 340/2 *Jump-spark, a disruptive spark excited between two conducting surfaces in distinction from a spark excited by a rubbing contact.1911Daily Colonist (Victoria, B.C.) 20 Apr. 8/1 A regal Marine Engine... Jump spark or make-and-break ignition.1922A. F. Collins Bk. Wireless Telegraph & Telephone i. 6 The spark-coil, or induction coil,..is used to change the battery current into a current of high pressure to make jump sparks.1938A. W. Judge Automobile Electr. Maintenance ii. 27 A brass plate at the end of the arm..passes very close to the brass contacts..as it rotates, so that a spark leaps across the small air gap. This is known as the jump spark method.1963Bird & Hutton-Stott Veteran Motor Car 8 ‘Jump-spark’ ignition in American usage generally, though not always, referred to high tension coil and battery apparatus with a mechanical contact-breaker and non-trembling coil, but in English usage, at one time, ‘jump-spark ignition’ meant any form of H.T. ignition with spark-gaps or ‘intensifiers’ included in the circuit.[1973Motor 10 Nov. 22/3 (heading) Jump-a-start.]1976J. Webster Automotive Fund. for Consumer viii. 176 To *jump-start a car, another car with a good battery and a set of jumper cables is needed.1977Washington Post 9 Nov. b8/2 Another car, also with its hood up and facing the stalled car, was trying to give it a jump start.1985New Yorker 21 Oct. 38/2, I jump-start her car when her battery is dead, she gives me basil from her garden.1874J. D. Heath Croquet Player 41 The leapfrog or *jump stroke has lately been used..with great success, for getting through narrow hoops at a very oblique angle... The effect of this stroke is to make the ball jump up when it strikes the further wire of the hoop.1939Jrnl. R. Aeronaut.Soc. XLIII. 62 A sustaining rotor for a gyroplane of the ‘*jump take-off’ type.1924Tourist Winter Sports No. 12/1 *Jump turn, a method of changing direction or stopping.1949Shurr & Yocom Mod. Dance v. 147 Add a jump in place after each landing, before executing jump-turn movement in air.1972M. Yorke Silent Witness ii. 13 He did a quick jump turn and took the narrow track, running fast along the twisting piste.1864Webster s.v.Weld, Butt-weld, or *jump-weld.