a person or thing that taps or strikes lightly.
a telegraph key.
a person or thing that taps, as trees for the sap or juice, a blast furnace, cask, or other container for their contents, etc.
a person who cuts screw threads into the surface of a circular opening, as of a pipe, nut, etc.
a person who taps
a tool or instrument that taps
(Northern English, dialect) an unstable and violent person
noun, Machinery. 1. a sliding rod, intermittently struck by a cam, for moving another part, as a valve. noun 1. a mechanical part that reciprocates to receive or transmit intermittent motion, esp the part of an internal-combustion engine that transmits motion from the camshaft to the push rods or valves
noun 1. self-tapping screw. self-tapping screw [self-tap-ing] /ˈsɛlfˌtæp ɪŋ/ noun 1. a screw designed to tap its corresponding female thread as it is driven.
- Tapping up
noun 1. (Brit, informal) (esp of a professional soccer club) the illicit practice of attempting to recruit a player while he is still bound by contract to another team
noun, Scot. 1. a hen with a crest or topknot. 2. a tankard, especially a large one, with a knob or ornament projecting from the top of its lid. noun (Scot) 1. a hen with a crest 2. a pewter tankard, usually with a distinctive knob on the lid