From WordNet (r) 3.0 (2006) [wn]:
helicopter
n 1: an aircraft without wings that obtains its lift from the
rotation of overhead blades [syn: helicopter, chopper,
whirlybird, eggbeater]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Helicopter \Hel"i*cop`ter\, v. i.
to travel in a helicopter.
[PJC]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Helicopter \Hel"i*cop`ter\, v. t.
to transport in a helicopter.
[PJC]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Helicopter \Hel"i*cop`ter\, n. [NL., fr. Gr. "e`lix, "e`likos, a
spiral + ptero`n a wing.]
a heavier-than-air aircraft whose lift is provided by the
aerodynamic forces on rotating blades rather than on fixed
wings. Contrasted with fixed-wing aircraft.
[PJC]