Origin of leek
- Middle English lek from Old English lēac
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English, from Old English lēac (“a garden herb, leek, onion, garlic”), from Proto-Germanic *lauką (“leek, onion”) *laukaz, from Proto-Indo-European *leug- (“to bend”). Cognate with Dutch look (“garlic, leek”), Low German look, Look, German Lauch (“leek, allium”), Danish løg, Swedish lök (“onion”), Icelandic laukur (“onion, leek, garlic”). See garlic.