tide
The daily fluctuation in the level of the sea caused by the gravitational influence of the moon and the sun.
Example
“The Bristol Channel has some of the world's largest tides.”
Other meanings
The associated flow of water.
“A lot of driftwood was brought in on the tide.”
Any similar gravitational effect on Earth or other body.
“As well as sea tides, there are much smaller land tides.”
Example sentences
Where this comes from
This definition is adapted from “tide” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.