English

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

 

open bar

 noun
noun
BrE BrE//ˌəʊpən ˈbɑː(r)//
 
; NAmE NAmE//ˌoʊpən ˈbɑːr//
 
[uncountable, countable]
 
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an occasion when all the drinks at a party or other event have been paid for by somebody else or are included in the ticket price
See the Oxford Advanced American Dictionary entry: open bar