ratchet

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction
verb move by degrees in one direction only

From French rochet (“bobbin, spindle, ratchet”), from Italian rocchetto (“spool, ratchet”).

RATCHET HEAD.--This shows a well-known form for common ratchet. — Practical Mechanics for Boys, James Slough Zerbe
The third cause which catches hold, like a ratchet wheel in machinery, from time to time producing a complete standstill, is the greater strength of the defensive form. — On War, Carl von Clausewitz
The platform could be made to stop at any stage of its upward progress, by means of a ratchet wheel and a catch, and now Mrs. Lovett paused to take breath. — The String of Pearls; Or, The Barber of Fleet Street. A Domestic Romance., Thomas Peckett Prest

rachet, ratch

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