pea green adjective 1noun 1forms 1 adjective1 •Of a yellowish green colour, like that of peas.The pea-green colour of the South-Western engines, with the curious buff-and-amber of the carriages, was also a novelty, as were the raised top-decks of the older guards' vans. — 1939 noun1 •A medium green colour, like that of peas. formspea greens