A variety of squash named for its acorn like shape.
acorn squash definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a kind of winter squash, acorn-shaped with ridged, dark-green skin and sweet, yellow flesh
acorn squash definition by American Heritage Dictionary
A type of winter squash shaped somewhat like an acorn and having longitudinal ridges, a variously colored rind, and yellow to orange flesh.
white acorn squash