The term 'Boeing Plane' refers to two specific aircraft models produced by the American aerospace company Boeing. The first is the 'JET, ' a three-letter word, which is the Boeing 737, a narrow-body short- to medium-range twin-engine JET airliner. The second is the 'Sevensixtyseven, ' a fifteen-letter word, which is the Boeing 767, a wide-body mid- to long-range twin-engine JET airliner. Both planes are used for commercial and military purposes.