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

blowhole

noun
 
/ˈbləʊhəʊl/
 
/ˈbləʊhəʊl/
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  1. a hole in the top of a whale's head through which it breathes
  2. a hole in a large area of ice, through which seals, etc. breathe
See blowhole in the Oxford Advanced American Dictionary
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noun
 
 
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