DETENT
pawl, detent, click, dog
(noun) a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
Source: WordNet® 3.1
Etymology
Noun
detent (plural detents)
That which locks or unlocks a movement; a catch, pawl, or dog; especially, in clockwork, the catch which locks and unlocks the wheelwork in striking.
Verb
detent (third-person singular simple present detents, present participle detenting, simple past and past participle detented)
The action of creating a detent mechanism to lock or unlock movement.
Anagrams
• netted, tented
Source: Wiktionary
De*tent", n. Etym: [F. détente, fr. détendre to unbend, relax; pref.
dé- (L. dis- or de) + tendre to stretch. See Distend.] (Mech.)
Definition: That which locks or unlocks a movement; a catch, pawl, or dog;
especially, in clockwork, the catch which locks and unlocks the
wheelwork in striking.
Source: Webster’s Unabridged Dictionary 1913 Edition