- Also called: head gate, water gate
a gate in a sluice that is used to control the flow of water
See also sluicegate - (often plural)
a control or barrier against an outpouring or flow
WordReference Random House Learner's Dictionary of American English © 2025
flood•gate /ˈflʌdˌgeɪt/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- Civil Engineeringa gate regulating the flow of water.
- anything serving to control the passage of something:opened (or closed) the floodgates to immigration.
flood•gate
(flud′gāt′),USA pronunciation n.
- Civil Engineeringa gate designed to regulate the flow of water.
- anything serving to control the indiscriminate flow or passage of something.
- 1175–1225; Middle English; see flood, gate
Collins Concise English Dictionary © HarperCollins Publishers::
'floodgate' also found in these entries (note: many are not synonyms or translations):