vitalpiece
nounUK /ˈvaɪ.təl.piːs/
US /ˈvaɪ.t̬əl.piːs/
A vital piece is a very important part that something needs to work.
The battery is the vitalpiece that makes the toy robot move.
RELATED WORDS
OTHER MEANINGS
2. The most important part of a plan or idea.
Trust is the vitalpiece of a good friendship.
3. A piece of a puzzle or game that you must have to finish it.
We found the vitalpiece under the sofa and finished the puzzle.
4. A small but necessary part of a machine.
The tiny screw was the vitalpiece that held the wheel on.