/hel"i kop'teuhr, hee"li-/ , n.
1. any of a class of heavier-than-air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine.
v.i.
2. to fly in a helicopter.
v.t.
3. to convey in a helicopter.
[ 1885-90; hélicoptère. See HELICO-, -PTER ]