pea: [17] Pea is the mirror-image of dice. Dice started off as the plural of die, but has become a singular form; the singular form of pea was originally pease, but it came to be regarded as plural, and so a new singular pea was created. The word was originally acquired in the Old English period from Latin pisa, which in turn got it from Greek píson. The old singular form survives in pease pudding. Relatives of the word include French pois, Italian pisello, and Welsh pysen. [pea etymology, pea origin, 英语词源]