copilot
nounUK /ˈkəʊˌpaɪlət/
US /ˈkoʊˌpaɪlət/
A copilot is a person who helps the pilot fly a plane.
The copilot helped the pilot land the plane safely.
OTHER MEANINGS
2. A person who helps drive a car or other vehicle.
My older brother was the copilot on our road trip.
3. A helper who assists someone in charge.
She acted as the copilot for the project leader.
4. A computer program that helps a person do tasks.
The writing copilot suggested a better sentence.