Definition of butternut squash noun from the Oxford Advanced American Dictionary

 

butternut squash

 noun
noun
NAmE//ˌbʌt̮ərnʌt ˈskwɑʃ//
 
[countable, uncountable]
 
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a long fruit that grows on the ground and is eaten as a vegetable. It has a hard yellow skin and orange flesh, and is fatter at one end than the other butternut squash soup Peel the butternut squash and cut the flesh into chunks.
See the Oxford Advanced Learner's Dictionary entry: butternut squash