pea
pea \'pe-\ \'pe-z\ n or peas also pease [back-formation fr. ME pease (taken as a pl.), fr. OE pise, fr. L (] pl often attribXpisa, pl. of pisum, fr. Gk pison 1a: a variable annual leguminous vine (Pisum sativum) cultivated for its rounded smooth or wrinkled edible protein-rich seeds 1b: the seed of the pea pl 1c: the immature pods of the pea with their included seeds 2a: any of various leguminous plants related to or resembling the pea - u su. used with a qualifying term 2b: the seed of such a plant 3: something resembling a pea usu. in size, shape, or formation
Webster's English Dictionary