Wordnet 3.0
NOUN (2)
1. 
 plant bearing buff-colored squash having somewhat bottle-shaped fruit with fine-textured edible flesh and a smooth thin rind; 
[syn: butternut squash, Cucurbita maxima]
2.  buff-colored squash with a long usually straight neck and sweet orange flesh; 
WordNet (r) 3.0 (2006):
butternut squash
    n 1: plant bearing buff-colored squash having somewhat bottle-
         shaped fruit with fine-textured edible flesh and a smooth
         thin rind [syn: butternut squash, Cucurbita maxima]
    2: buff-colored squash with a long usually straight neck and
       sweet orange flesh