noun
- Plural of ballcock; a valve mechanism in a toilet tank that controls water level by means of a floating ball attached to a lever.
Usage: chiefly British; technical/plumbing term
Examples
- The plumber replaced the worn ballcocks in both bathroom toilets.
- Modern ballcocks are more efficient than older models at preventing water waste.
- If your toilet runs constantly, the ballcocks may need adjustment.
- The ballcocks in the guest bathroom were making a strange noise.
- Installing new ballcocks reduced the water bill significantly.