Ratchet



noun
1.
(a series of notche on a barwheel on which a pawl engages to prevent backward movement. the bar or wheel bearing, these) កងចក្រមានធ្មេញជុំវិញ
ENGLISH MEANING
noun
1.
A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc.
2.
A mechanism composed of a ratchet wheel, or ratch, and pawl.