Origin of leekMiddle English lek from Old English leac, akin to German lauch from uncertain or unknown; perhaps Indo-European base an unverified form leug-, to bend from source Classical Latin luxus, excess: so named uncertain or unknown; perhaps from its outward-bent leaves
Origin of leekMiddle English lek from Old English lēac
Allium ampeloprasum var. porrum
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.