What is "twinjet"

n. 1 (context aviation English) An aircraft powered by two jet engines. 2 (context physics English) Two jets of particles from an event or source

n. a jet plane propelled by two jet engines

A twinjet or twin jet is a jet aircraft powered by two engines. Such configuration of an aircraft is the most popular today for commercial airliners, for fighters, and many other kinds, because while offering safety from a single engine failure, it is also acceptably fuel-efficient.