Definition of tide lock
: a lock situated between an enclosed basin or a canal and the tidewater of a harbor or river when they are on different levels so that craft can pass either way at all times of the tide
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up tide lock? Please tell us where you read or heard it (including the quote, if possible).