Wiktionary
n. 1 (context idiomatic US prison slang English) a severe head injury resulting from a beating. 2 (context slang English) an Asian, who are reputed to have big round heads
Usage examples of "pumpkin head".
Even Jack, holding fast to his pumpkin head, ran and hid himself behind a balloon vine.
He wondered if the creature's body had grown from the substance in its previously enormous pumpkin head and, more pointedly, from the flesh of Frank, Lois, and Kyle Sutzmann.
He decided to manufacture the form of a man, who would wear this pumpkin head, and to stand it in a place where old Mombi would meet it face to face.
The bit of wood which formed this neck was also sharpened at the upper end, and when all was ready Tip put on the pumpkin head, pressing it well down onto the neck, and found that it fitted very well.
Ozma's my parent, you know, because she built my body and carved my pumpkin head.
The only proper way to illuminate a pumpkin head is with the stub of a candle.
It showed a bizarre creature with a pumpkin head and a spindly body and a mouthful of teeth, and Dannerman did not ask again what it was that was so important.