a lock at the entrance to a tidal basin.
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Origin of tide lock
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for tide lock
Historical Examples of tide lock
At Eddyville the first lock, a tide-lock, bars the way, and here the horses and mules are kept.A Tale of the Tow-Path