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

 

haar

 noun
noun
BrE BrE//hɑː(r)//
 
; NAmE NAmE//hɑːr//
 
[singular]
 
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a cold sea fog on the east coast of England or Scotland Word Origin late 17th cent.: perhaps from Old Norse hárr ‘hoar, hoary’.