1. squash plant bearing small acorn-shaped fruits having yellow flesh and dark green or yellow rind with longitudinal ridges;
2. small dark green or yellow ribbed squash with yellow to orange flesh;
WordNet (r) 3.0 (2006):
acorn squash
n 1: squash plant bearing small acorn-shaped fruits having
yellow flesh and dark green or yellow rind with
longitudinal ridges
2: small dark green or yellow ribbed squash with yellow to
orange flesh