Noun: head gate hed geyt
- A gate upstream from a lock or canal that is used to control the flow of water at the upper end
"The operator opened the head gate to allow water into the irrigation canal"
- Regulator consisting of a valve or gate that controls the rate of water flow through a sluice
"The operator lowered the head gate to reduce the water flow";
- sluicegate, sluice valve, floodgate, penstock, water gate
Derived forms: head gates