- a navigable channel giving access to the sea.
Origin of sea gate
First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sea gate
Edmond Czerny was no fool to leave a sea-gate open to all the world.The House Under the Sea
Sir Max Pemberton
"And the sea-gate also," said Philip, who was reloading his revolver.
It was outside the sea-gate, however, that the siege was pressed most hardly.
Up to the sea-gate the lovers passed, surrounded by their friends.
He strolled along the sea-shore, and met Cocom just outside the sea-gate.