head gate head·gate uncommon noun 1. regulator consisting of a valve or gate that controls the rate of water flow through a sluice Synonymssluicegatesluice valvefloodgatepenstockhead gatewater gate 2. a gate upstream from a lock or canal that is used to control the flow of water at the upper end Synonymshead gate Related words Broader terms gateregulator Parts sluice WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
