English
jetcopter
From jet + copter.
Proto-Indo-European *(H)yeh₁- ‘to throw’
…
Latin iactus ‘a throwing, a throw’
Vulgar Latin *iectus
Old French get
French jet ‘spurt’
English jet
Today it means
noun A jet-powered helicopter.
Language periods are conventional ranges, not dates for this word.
Etymograph / jetcopter