keyrole
nounUK /ˈkiː rəʊl/
US /ˈkiː roʊl/
The most important part that someone plays in making something happen.
She had a key role in organizing the school play.
RELATED WORDS
OTHER MEANINGS
2. A crucial character in a story or film.
The actor was chosen for the key role of the brave knight.
3. An essential function of a machine or system.
The battery plays a key role in making the toy move.
4. A job that is very important for a team to succeed.
The goalkeeper has a key role in the soccer team.