English
sawfly
From saw + fly.
Proto-Indo-European *plew- ‘to fly, flow, run’
…
Proto-Germanic *fleugǭ ‘flying insect, fly’
Proto-West Germanic *fleugā ‘fly’
Old English flēge ‘a fly’
Middle English fflye
English fly
Today it means
noun Any of various flying insects of the suborder Symphyta, within the order Hymenoptera, whose ovipositor is long and often serrated and is used to cut into plants to lay eggs.
Language periods are conventional ranges, not dates for this word.
Etymograph / sawfly