Daily tidbit for May 16
Page 8: airplane, [or aeroplane]. Self-powered heavier-than-air craft with fixed wings, capable of flight. Modern airplanes are monoplanes (1-winged) but in the early development of aviation biplanes and triplanes were common. Single-engine craft have given way to 2- and 4-engine, and recent developments in jet propulsion include the introduction of jet liners on regular passenger schedules.