barrack

barrack /ˈberək/ verb
barracks; barracked; barracking
barrack
/ˈberək/
verb
barracks; barracked; barracking
Britannica Dictionary definition of BARRACK
1 
British : to bother or interrupt (someone, such as a performer or speaker) by shouting comments or criticism
[+ object]
[no object]
2 
[no object] chiefly Australia : to shout in support of a person or group — often + for

— barracking

noun
[noncount] [singular]