catapult
n.
1570s, from Middle French catapulte and directly from Latin catapulta "war machine for throwing," from Greek katapeltes, from kata "against" (see cata-) + base of pallein "to toss, hurl" (see pulse, n.1). As an airplane-launching device on an aircraft-carrier by 1927.
v.
1848, "to throw with a catapult," from catapult, n.. Intransitive sense by 1928. Related: Catapulted; catapulting.
〔李〕n.弹弓;弹射器 [pult=to hurl] ←cat(a)-[GK] =down向下;against相反;wrongly错误;completely完全