English

Definition of oxygen bar noun from the Oxford Advanced Learner's Dictionary

 

oxygen bar

 noun
noun
BrE BrE//ˈɒksɪdʒən bɑː(r)//
 
; NAmE NAmE//ˈɑːksɪdʒən bɑːr//
 
 
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a place where you can pay to breathe pure oxygen in order to improve your health and help you relax
See the Oxford Advanced American Dictionary entry: oxygen bar