Dictionary

pigweed

noun pig·weed \-ˌwēd\

Definition of PIGWEED

:  any of various vigorous weedy plants especially of the goosefoot or amaranth families
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First Known Use of PIGWEED

circa 1801
Medical Dictionary

pigweed

noun pig·weed \ˈpig-ˌwēd\

Medical Definition of PIGWEED

:  any of several plants of the genus Amaranthus (as A. retroflexus and A. hybridus) producing pollen that is an important hay fever allergen

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