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

 

Bigfoot

 noun
noun
BrE BrE//ˈbɪɡfʊt//
 
; NAmE NAmE//ˈbɪɡfʊt//
 
(pl. Bigfeet)(also Sasquatch)
 
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a large creature covered with hair like an ape, which some people believe lives in western N America Word Originso named because of the size of its footprints.
See the Oxford Advanced American Dictionary entry: Bigfoot