名詞 detent:

1. a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
   同義詞：pawl, click, dog

de.tent

n.（名詞）
A catch or lever that locks the movement of one part of a mechanism.
制動裝置：阻止機械裝置的某一部分的運動的擒縱裝置或控制桿

來源：
French détente [a loosening]
法語 détente [放松]
from Old French destente [from feminine past participle of] destendre [to release]
源自 古法語 destente [] 源自destendre的陰性過去分詞 [釋放]
des- [de-]
des- [前綴，表.使…離開.]
tendre [to stretch] from Latin tendere * see ten-
tendre [拉伸] 源自 拉丁語 tendere *參見 ten-