| 单词 | tap |
| 释义 | tap 1. n. & v. --n 1. a device by which a flow of liquid or gas from a pipe or vessel can be controlled. 2. an act of tapping a telephone etc. 3. Brit. a taproom. 4. an instrument for cutting the thread of a female screw. --vtr. (tapped, tapping) 1. a provide (a cask) with a tap. b let out (a liquid) by means of, or as if by means of, a tap. 2. draw sap from (a tree) by cutting into it. 3. a obtain information or supplies or resources from. b establish communication or trade with. 4. connect a listening device to (a telephone or telegraph line etc.) to listen to a call or transmission. 5. cut a female screw-thread in. Phrases and idioms on tap 1. ready to be drawn off by tap. 2. colloq. ready for immediate use; freely available. tap root a tapering root growing vertically downwards. tap water water from a piped supply. Derivatives tapless adj. tappable adj. Etymology: OE t{aelig}ppian (v.), t{aelig}ppa (n.) f. Gmc 2. v. & n. --v (tapped, tapping) 1. intr. (foll. by at, on) strike a gentle but audible blow. 2. tr. strike lightly (tapped me on the shoulder). 3. tr. (foll. by against etc.) cause (a thing) to strike lightly (tapped a stick against the window). 4. intr. = TAP-DANCE v. (can you tap?). --n 1. a a light blow; a rap. b the sound of this (heard a tap at the door). 2. a = TAP-DANCE n. (goes to tap classes). b a piece of metal attached to the toe and heel of a tap-dancer's shoe to make the tapping sound. 3. (in pl., usu. treated as sing.) US a a bugle call for lights to be put out in army quarters. b a similar signal at a military funeral. Derivatives tapper n. Etymology: ME tappe (imit.), perh. through F taper |
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