Synonyms for Cowpea (same or very similar meaning)
WordNet sense 1 (fruit or seed of the cowpea plant):
black-eyed peaWordNet sense 2 (sprawling Old World annual cultivated especially in southern United States for food and forage and green manure):
cowpea plant, Vigna sinensis, Vigna unguiculataFrom the ODE community, based on WordNetadd/edit