English

leatherjacket

From leather + jacket.

Proto-Germanic *leþrą ‘leather’

Proto-West Germanic *leþr

Old English leþer ‘leather’

Middle English lether

Arabic شَكّ ‘breastplate’

Old French jaque ‘a gambison’

Middle French jacquet

Today it means

noun The larva of certain crane flies.

Language periods are conventional ranges, not dates for this word.

Etymograph / leatherjacket