Definition of pumpkin-headed:
(n) :
The round yellow or orange fruit of this plant.
(n) :
A domesticated plant, in species Cucurbita pepo, similar in growth pattern, foliage, flower, and fruit to the squash or melon.
(n) :
(uncountable) The typical color of the ripe fruit of the pumpkin plant.
(n) :
(US) A term of endearment for someone small and cute.
(n) :
(Australia) Any of a number of cultivars from the genus Cucurbita; known in the US as winter squash.
(n) :
(informal, automotive) The housing for a differential, built into an axle of a vehicle; the housing and its contents.