Definition of cottonwood noun from the Oxford Advanced Learner's Dictionary

 

cottonwood

 noun
noun
BrE BrE//ˈkɒtnwʊd//
 
; NAmE NAmE//ˈkɑːtnwʊd//
 
(also cottonwood tree)
 
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a type of N American poplar tree, with seeds that are covered in hairs that look like white cotton
See the Oxford Advanced American Dictionary entry: cottonwood