Pronunciation: (âr'plān"), [key]
1. a heavier-than-air aircraft kept aloft by the upward thrust exerted by the passing air on its fixed wings and driven by propellers, jet propulsion, etc.
2. any similar heavier-than-air aircraft, as a glider or helicopter. Also, esp. Brit.,aeroplane.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.