| 词汇 | tap |
| 词根词缀 | 词源： 1. tap (v.) "strike lightly," early 13c., from O.Fr. taper "tap, rap, strike," from a Gallo-Romance or Germanic source ultimately imitative of the sound of rapping. Meaning "to designate for some duty or for membership" is recorded from 1952, from notion of a tap on the shoulder. The noun is attested from c.1300. Tap dancer first recorded 1927, from tap (n.) in the sense of "metal plate over the heel of a shoe" (1680s). 2. tap (n.) "stopper, faucet," O.E. tæppa, from P.Gmc. *tappon (cf. M.Du. tappe, Du. tap, O.H.G. zapfo, Ger. zapfen). Originally a tapering cylindrical peg (hence taproot). Meaning "device to listen in secretly on telephone calls" is from 1923, from the verb in this sense, originally (1869) with ref. to telegraph wires. Phrase on tap "ready for use" is recorded from 1483. The verb meaning "to supply with a tap" is from O.E. tæppian. Extended sense of "make use of" is first recorded 1570s. Tap-room is from 1807. Tapped out "broke" is 1940s slang, perhaps from the notion of having tapped all one's acquaintances for loans already (cf. British slang on the tap "begging, making requests for loans," 1932). 词根记忆： n. 塞子;水龙头;n./v.轻打,轻敲;vt.开发The mapper trapped in the gap tapped the tap wrapper with strap.陷在缝中的制图者用皮带轻击塞子套. |
| 随便看 |
英语词根词缀词典收录了31503条英语词根词缀词条，基本涵盖了全部常用英语词汇的词根、词缀及词根记忆法解析，是记忆英语词汇的必备工具。