black-eyed pea blac·keyed·pea uncommon noun 1. fruit or seed of the cowpea plant Synonymscowpeablack-eyed pea 2. sprawling Old World annual cultivated especially in southern United States for food and forage and green manure Synonymscowpeacowpea plantblack-eyed peaVigna unguiculataVigna sinensis 3. eaten fresh as shell beans or dried Synonymsblack-eyed peacowpea Related words Broader terms legume Parts cowpeaVigna Part of black-eyed peacowpea WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.