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



BrE BrE//ˈstɒpkɒk//
; NAmE NAmE//ˈstɑːpkɑːk//
(also cock)
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a tap that controls the flow of liquid or gas through a pipe If you have a burst pipe, turn off the stopcock immediately.
See the Oxford Advanced American Dictionary entry: stopcock