breakout

Từ điển Oxford Advanced Learner 8th

break·out [breakout breakouts] noun, adjective BrE [ˈbreɪkaʊt] NAmE [ˈbreɪkaʊt]
noun
an escape from prison, usually by a group of prisoners
•a mass breakout from a top security prison
 
adjective only before noun
1. (NAmE, informal)suddenly and extremely popular and successful; establishing sb's reputation
•a breakout hit/movie
2. (especially NAmE)taking place separately from the main meeting with a smaller number of people
•a breakout session before the plenary
•a breakout group on ethical issues
•Here are some notes from the breakout session I attended.