noun / verb
ratchet
RACH-it/ˈrætʃɪt/
A mechanism that advances by steps while preventing reversal.
The ratchet lets the wheel advance but blocks backward movement.
Etymology
French rochet meant “bobbin” or “spindle.” In English, the word named a pivoted catch engaging a toothed wheel—the part that makes the mechanism turn in one direction while blocking reverse motion.
In context
handcuffs the sound was so distinctive the undeniable crisp click of steel ratchet teeth snapping shut
More examples
- This ratchet fits several sizes of socket.
- She ratchets the strap tighter until the load is secure.
- The company ratcheted up its prices three times last year.
Forms
ratchet · ratchets · ratcheted · ratcheting
Similar words
- one-way clutch
- Allows rotation one way, often without discrete clicking steps.