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

 

blowhard

 noun
noun
BrE BrE//ˈbləʊhɑːd//
 
; NAmE NAmE//ˈbloʊhɑːrd//
 
(North American English, informal, disapproving)
 
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a person who talks too proudly about something they own or something they have done
See the Oxford Advanced American Dictionary entry: blowhard