What is the meaning of Ebb?

The receding movement of the tide.

A gradual decline.

A low state; a state of depression.

A European bunting, the corn bunting (Emberiza calandra, syns. Emberiza miliaria, Milaria calandra).

low, shallow

to flow back or recede

to fall away or decline

to fish with stakes and nets that serve to prevent the fish from getting back into the sea with the ebb

To cause to flow back.

ebb, low tide

Source: wiktionary.org