winter crookneck squash win·terc·rook·necksquash uncommon noun 1. any of various plants bearing squash having hard rinds and elongated recurved necks Synonymswinter crookneckwinter crookneck squashCucurbita moschata 2. a squash with a hard rind and an elongated curved neck Synonymswinter crookneck squash Related words Broader terms winter squash Parts winter crookneck Part of winter crookneck squash WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.