Cucurbita maxima turbaniformis

turban squash - large squash shaped somewhat like a turban usually with a rounded central portion protruding from the blossom end

Cucurbita, genus Cucurbita - type genus of the Cucurbitaceae

winter squash, winter squash plant - any of various plants of the species Cucurbita maxima and Cucurbita moschata producing squashes that have hard rinds and mature in the fall

buttercup squash - plant bearing somewhat drum-shaped fruit having dark green rind with greyish markings