gilet—A waistcoat worn by a man.
Borrowed from French gilet (“vest, waistcoat”), from regional Italian gileccu (Calabria), gilecco (Genoa), gelecco (Naples), ggileccu (Sicily), etc. (standard Italian gilè is borrowed from French), from Turkish yelek (“jelick; vest, waistcoat”) (ultimately from Proto-Turkic *yẹl (“wind”, noun)) with the final syllable modified to match other types of clothing such as corselet and mantelet. The Oxford English Dictionary does not regard the French word as having derived from Arabic جَلِيقَة (jalīqa), which it views as a recent borrowing from Italian into Algerian Arabic. Doublet of jelick.