Definition of: pumpkin

(pump′kin, pung′-) noun
1. A large trailing vine (Cucurbita pepo) with heart–shaped leaves.
2. Its large, round, edible, yellow fruit.
3. In Europe, the winter squash (C. maxima) or any of its varieties. [Earlier pompion <MF pompon, popon <L pepo, peponis <Gk. pepōn a melon, lit., ripe, cooked by the sun]