Meaning of HEAD GATE

Pronunciation:			hed geyt
WordNet Dictionary
	Definition:		[n]  a gate upstream from a lock or canal that is used to control the flow of water at the upper end [n]  regulator consisting of a valve or gate that controls the rate of water flow through a sluice
	Synonyms:		floodgate, penstock, sluice valve, sluicegate, water gate
	See Also:		gate, regulator, sluice, sluiceway