Ratchet

1.

(a series of notche on a barwheel on which a pawl engages to prevent backward movement. the bar or wheel bearing, these) កងចក្រមានធ្មេញជុំវិញ

• Ratchet effect
  - ឥទ្ធិពលរ៉ាឆែត

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.