Definition of HELICOPTER

a vehicle for traveling through the air that obtains its lift from rotors which spin horizontally <took a helicopter tour to get a better sense of the grandeur of the Grand Canyon>
Related Words rotary-wing aircraft, rotorcraft; autogiro (or autogyro), convertiplane (or convertaplane), gyroplane, tilt-rotor; slick [slang]

Seen & Heard

What made you want to look up helicopter? Please tell us where you read or heard it (including the quote, if possible).