| pigwash | (noun) wet feed (especially for pigs) consisting of mostly kitchen waste mixed with water or skimmed or sour milk | Synonyms: pigswill, slop, slops, swill |
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| pigweed | (noun) leaves collected from the wild | Synonyms: lamb's-quarter, wild spinach |
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| (noun) common weedy European plant introduced into North America; often used as a potherb | Synonyms: Chenopodium album, lamb's-quarters, wild spinach |
| (noun) leaves sometimes used as potherbs; seeds used as cereal; southern United States to Central America; India and China | Synonyms: Amaranthus hypochondriacus |