crucialpiece
nounUK /ˈkruː.ʃəl.piːs/
US /ˈkruː.ʃəl.piːs/
A crucialpiece is the most important part that makes something work.
The battery is the crucialpiece that makes the toy robot move.
RELATED WORDS
OTHER MEANINGS
2. The single part whose absence would make the whole thing fail.
The missing wheel was the crucialpiece, so the cart could not roll.
3. The most important person in a team or plan.
Our goalie is the crucialpiece of the soccer team.
4. The final piece needed to complete a puzzle or set.
She found the crucialpiece and finished the jigsaw puzzle.
5. A small but very important detail in a story or plan.
The detective noticed the crucialpiece that solved the mystery.