stand-in
nounUK /ˈstænd ɪn/
US /ˈstænd ɪn/
A stand-in is a person who takes someone else's place for a while.
The actor's stand-in waited on set while the lights were fixed.
RELATED WORDS
OTHER MEANINGS
2. A person who does another person's job for a short time.
She acted as a stand-in for the manager during the meeting.
3. A thing used in place of another thing.
The box was a stand-in for a table during the picnic.
4. In movies, a person who looks like an actor and takes their place for some shots.
The stand-in stood under the bright lights so the star could rest.