- a plant, Allium ampeloprasum, of the amaryllis family, allied to the onion, having a cylindrical bulb and leaves used in cookery.
- any of various allied species.
- Also called: scallion an alliaceous plant, Allium porrum, with a slender white bulb, cylindrical stem, and broad flat overlapping leaves: used in cooking
- any of several related species, such as A. ampeloprasum (wild leek)
- a leek, or a representation of one, as a national emblem of Wales
n.culinary herb, Old English læc (Mercian), leac (West Saxon) “leek, onion, garlic,” from Proto-Germanic *lauka- (cf. Old Norse laukr “leek, garlic,” Danish løg, Swedish lök “onion,” Old Saxon lok “leek,” Middle Dutch looc, Dutch look “leek, garlic,” Old High German louh, German Lauch “leek”). No known cognates; Finnish laukka, Russian luk-, Old Church Slavonic luku are borrowed from Germanic.