spaghetti squash

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

• noun A variety of winter squash (Cucurbita pepo) having a pale yellow rind and stringy flesh that when cooked forms strands resembling spaghetti.

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

• noun Cucurbita pepo, an oblong seed-bearing variety of winter squash.

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

• noun medium-sized oval squash with flesh in the form of strings that resemble spaghetti
• noun squash plant bearing oval fruit with smooth yellowish skin and tender stranded flesh resembling spaghetti