Толковый словарь английского языка Oxford English Reference - ratchet
Ratchet
ratchet
n. & v. --n. 1 a set of teeth on the edge of a bar or wheel in which a device engages to ensure motion in one direction only. 2 (in full ratchet-wheel) a wheel with a rim so toothed. --v. (ratcheted, ratcheting) 1 tr. a provide with a ratchet. b make into a ratchet. 2 tr. & intr. move as under the control of a ratchet. Etymology: F rochet blunt lance-head, bobbin, ratchet, etc., prob. ult. f. Gmc
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1.
I. noun also rachet see: rock Date: 1654 a mechanism that consists of a bar or wheel having inclined teeth into which a pawl drops so that motion can be imparted to the wheel or bar, governed, or prevented and that is used in a hand tool (as a wrench or screwdriver) to allow effective motion in one direction only, a pawl or detent for holding or propelling a toothed wheel, II. verb also rachet Date: 1972 transitive verb to cause to move by steps or degrees, intransitive verb to proceed by steps or degrees ...Толковый словарь английского языка
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