The Collaborative International Dictionary
Allium Porrum
Leek \Leek\ (l[=e]k), n. [AS. le['a]c; akin to D. look, G. lauch, OHG. louh, Icel. laukr, Sw. l["o]k, Dan l["o]g. Cf. Garlic.] (Bot.) A plant of the genus Allium ( Allium Porrum), having broadly linear succulent leaves rising from a loose oblong cylindrical bulb. The flavor is stronger than that of the common onion.
Wild leek, in America, a plant ( Allium tricoccum) with a cluster of ovoid bulbs and large oblong elliptical leaves.