multi-engine airplane; multi-engine aircraft
Technical term used in aviation contexts to refer to an aircraft with more than one engine.
Multi-engine airplanes are said to be safer than single-engine ones.
He obtained a license to fly multi-engine aircraft.
Compound of 多 (た, 'many') + 発 (はつ, 'engine' in this context) + 機 (き, 'machine, aircraft').