Definition of open bar
: a bar (as at a wedding reception) at which drinks are served free — compare cash bar
Examples of open bar in a sentence
They had a buffet and an open bar at the reception.
First Known Use of open bar
OPEN BAR Defined for English Language Learners
Definition of open bar for English Language Learners
: a counter at a party or other gathering where alcoholic drinks are served for free
Seen and Heard
What made you want to look up open bar? Please tell us where you read or heard it (including the quote, if possible).