A bar in a theatre or opera house selling drinks to the audience in the interval.
〈英〉（戏院或歌剧院供观众幕间休息时购买饮料的）小卖部
Example sentencesExamples
We lived in Bermondsey, it was before I was married so we'd have gone up on the bus, tube from the Elephant [and Castle]. May have had a drink, I don't think we'd have had a drink in the theatre because I still don't like crush bars, I'd rather not do it than fight for a drink.
As an American enjoying Covent Garden, I am afraid the drink and the snacks and the occasional hooray Henry in the crush bar pass me by; it is the (usually excellent) music and dance that matter.
The two saddle bars that occupy the bridge link between the grandstands resemble crush bars in a theatre.