English

Definition of ballcock noun from the Oxford Advanced Learner's Dictionary

 

ballcock

 noun
noun
BrE BrE//ˈbɔːlkɒk//
 
; NAmE NAmE//ˈbɔːlkɑːk//
 
 
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a device with a floating ball that controls the amount of water going into a container, for example the water tank of a toilet