Meaning

noun a cocktail made of gin or vodka and lime juice

noun hand tool for boring holes

originFrom Middle English gimlet etc., from Old French guinbelet, guimbelet, guibelet, probably a diminutive of the Anglo-Norman wimble, a variation of guimble (“drill”), from the Middle Low German wiemel; continued in Modern French as gibelet. Cocktail either named after the tool, in reference to its penetrating effects, or British Navy surgeon Thomas Gimlette (1857–1943).

Etymology from Wiktionary, CC BY-SA 3.0