winter squash

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of several varieties of squash, such as the butternut squash, that have thick rinds and can be stored for long periods.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of numerous cultivars of four species of summer growing vegetable of the genus Cucurbita

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of various fruits of the gourd family with thick rinds and edible yellow to orange flesh that mature in the fall and can be stored for several months
• noun any of various plants of the species Cucurbita maxima and Cucurbita moschata producing squashes that have hard rinds and mature in the fall