Webster's Revised Unabridged Dictionary · 1913

Pumpkin

Pumpkin , noun

[For older pompion, pompon, Old French pompon, Latin pepo, peponis, Greek {not transcribed}, properly, cooked by the sun, ripe, mellow; -- so called because not eaten till ripe. Compare Cook, n.]

(Botany) A well-known trailing plant (Cucurbita pepo) and its fruit, -- used for cooking and for feeding stock; a pompion.
Collocations (1)
Pumpkin seed (Zoology) , (a) The flattish oval seed of the pumpkin The common pondfish.