sealock

sealock noun: a lock that is positioned at the mouth of a canal or waterway so that, when the gates are closed, boats can be raised or lowered between the waterway and sea level.

Noun

sealock (plural sealocks)

A lock that is positioned at the mouth of a canal or waterway so that, when the gates are closed, boats can be raised or lowered between the waterway and sea level.
- At Corpach it is intended to form a sealock, to be cut out of the rock, and to make a small basin within it, capable of admitting a number of vessels with the flowing tide, which, after the gates are closed, may ascend the locks at leisure, […]1809, Sir John Carr, Caledonian Sketches, Or, A Tour Through Scotland in 1807, page 224
- All masters are prohibited from approaching the entrance to the sealocks when they observe a red flag flying […]1951, United States. Defense Mapping Agency. Hydrographic Center, Sailing Directions for the West Coast of Scotland: Mull of Galloway to Cape Wrath Including the Hebrides, page 127
Synonyms:

tidal lock

Proper noun capitalized: Sealock

Sealock (plural Sealocks)

A surname.

Synonyms of sealock

tidal lock

Forms of sealock

Noun
plural	sealocks
Proper noun
plural	Sealocks

Origin of sealock

From sea + lock.

Questions about sealock

What does sealock mean?: Sealock means a lock that is positioned at the mouth of a canal or waterway so that, when the gates are closed, boats can be raised or lowered between the waterway and sea level.
What part of speech is sealock?: Sealock can be a noun or a proper noun.
What is the plural of sealock?: The plural of sealock is sealocks.

Words near sealock in the dictionary

Adapted from Wiktionary: sealock (page history and authors); Sealock (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this entry: “sealock.” Word.ws, https://word.ws/sealock. Based on Wiktionary, CC BY-SA 4.0.