gravimeter (n.)Related entries & more
vernier (n.)Related entries & more
device for making precise measurements, 1766, from name of inventor, French mathematician Pierre Vernier (1580-1637), who described it in 1631.
tap (n.3)Related entries & more
"device to listen in secretly on telephone calls," 1923, from tap (v.2) in the "listen secretly" sense.
online (adj., adv.)Related entries & more
sand-trap (n.)Related entries & more
switchboard (n.)Related entries & more
gin (n.2)Related entries & more
"machine for separating cotton from seeds," 1796, American English, used earlier of other machineries, especially of war or torture, from Middle English gin "ingenious device, contrivance" (c. 1200), from Old French gin "machine, device, scheme," shortened form of engin (see engine). The verb in this sense is recorded from 1789. Related: Ginned; ginning. Middle English had ginful "ingenious, crafty; guileful, treacherous" (c. 1300).
automotive (adj.)Related entries & more
Turing machine (n.)Related entries & more
1937, named for English mathematician and computer pioneer Alan M. Turing (1912-1954), who described such a device in 1936.
extinguisher (n.)Related entries & more
1550s, "one who extinguishes" in any sense, agent noun from extinguish. As a mechanical device for putting out fires, from 1887.