Definition of wild leek
: either of two perennial herbs of the genus Allium:
a
: a coarse Old World herb (A. ampeloprasum) that is widely naturalized, has a large bulb with papery outer coats, and bears a tall stalk of whitish or greenish purple-tinged flowers
b
: a North American herb (A. tricoccum) with a slender bulb, fleshy leaves, and whitish flowers
