A pilot who assists the main pilot in the operation of an aircraft.

A helper or assistant in a non-aeronautical context.

सहायक

English Usage: In the project, she acted as a copilot to guide the new team members.

Hindi Usage: परियोजना में, उसने नए टीम सदस्यों को मार्गदर्शन देने के लिए सहायक के रूप में कार्य किया।