Etymology Back-formation from pease, an original singular reinterpreted as a plural. Further from Middle English pese (“a pea”), from Old English pise, from Latin pisa, pisum, from Ancient Greek πίσον (píson).
1
Any of certain plants of the family Fabaceae: Pisum sativum and others.
2
Especially A plant, Pisum sativum, member of the legume (Fabaceae) family.
When without a qualifier
Below, long rows of peas put forth their white-winged flowers, tempting the small butterflies to flutter round their inanimate likenesses;...1834, L[etitia] E[lizabeth] L[andon], chapter XXVI, in Francesca Carrara. […], volume II, London: Richard Bentley, […], (successor to Henry Colburn), →OCLC, page 277:
3
Cooking, Food, Lifestyle The edible seed of Pisum sativum.
4
Cooking, Food, Lifestyle The edible seed of various other pea plants.
5
Any of several varieties of bean.
peas and rice
Vigna unguiculata subsp. unguiculata is what most people call black-eyed peas but some people call black-eyed beans.
Oh, come on. Help a brother out. People see you coppin', might inspire them. Look, I know you ain't payin' bills right now. Man must have bare peas saved up.2023, Nathan Bryon, Tom Melia, directed by Raine Allen-Miller, Rye Lane, spoken by Nathan (Simon Manyonda):
Gambling, GamesUS Any of the small numbered balls used in a pea shake game.
3
Astronomy, Natural sciencesAbbreviation, Ellipsis Ellipsis of green pea galaxy.
pea
noun
Etymology From Middle English pe, po, poue, pa, paue, from Old English pēa, pāwa (“peacock”) (compare Old English pāwe (“peahen”)) and Old Norse pái (“peacock”), both from Proto-Germanic *pāwô (“peacock”), from Latin pāvō (“peacock”). Cognate with Saterland Frisian Pau, West Frisian pau, Dutch pauw, German Pfau. Doublet of Pavo.