An opening through which water may flow freely when the tide moves in one direction, but which closes automatically and prevents the water from flowing in the other direction.

The interval between consecutive high tides at a given place.

A gauge for showing the height of the tide, particularly one continuously updated.

A body of water made rough by the conflict of opposing tides or currents.

A sundial marking canonical hours. / An elliptical plate marking the state of the ocean tides.

A water wheel operated by the ebb and flow of the tide.

The tide at its lowest level for a particular tidal cycle at a certain place. / The time of day when the sea has receded to its lowest level.

(transitive, idiomatic) To support or sustain (someone), especially financially, for a limited period. / (transitive, obsolete outside India) To endure; weather.

The natural tide at its highest level for a particular tidal cycle at a certain place. / The time of day when the sea has risen to its highest level. / (figuratively) climax, culminating point or phase

The period between low tide and the next high tide in which the sea is rising. / (by extension) The highest point of something; a climax.