pigweed

(noun) common weedy European plant introduced into North America; often used as a potherb. Synonyms: lamb's-quarters, wild spinach, Chenopodium album.

(noun) leaves sometimes used as potherbs; seeds used as cereal; southern United States to Central America; India and China. Synonyms: Amaranthus hypochondriacus.

(noun) leaves collected from the wild. Synonyms: lamb's-quarter, wild spinach.