keypart
nounUK /ˈkiːpɑːt/
US /ˈkiːpɑːrt/
A keypart is a very important piece that something needs to work.
The wheel is a keypart of the bicycle.
RELATED WORDS
OTHER MEANINGS
2. A crucial section of a plan or idea.
Good teamwork is a keypart of our plan.
3. A small but necessary piece inside a machine.
He lost a keypart of the toy robot.
4. The most important role in a group or story.
She played a keypart in the school play.