/ ˈhelɪkɒptə(r); NAmE -kɑːp-/ (also informal cop·ter , chop·per ) noun
an aircraft without wings that has large blades on top that go round. It can fly straight up from the ground and can also stay in one position in the air :
He was rushed to the hospital by helicopter .
a police helicopter
a helicopter pilot
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WORD ORIGIN
late 19th cent.: from French hélicoptère , from Greek helix spiral + pteron wing.