From Longman Dictionary of Contemporary Englishbarrackbar‧rack /ˈbærək/ verb [intransitive, transitive] 1 British EnglishINTERRUPT to interrupt someone, especially a performer or a player, by shouting criticism at them At the 1965 Newport Folk Festival Bob Dylan was barracked for using electric instruments.2 SUPPORT A TEAM OR PLAYER AusE to shout to show that you support someone or something→ See Verb table
Examples from the Corpus
barrack• That's why he's a massive hit with fans who would normally barrack a boss when the team is struggling.• Earlier, other recruits of the 190 brought in by Timex were barracked as they drove through the lines in cars.• The politician was barracked by students at the back of the hall.• The crowds are mostly supporters, but if there is barracking from a foe so much the better. 