ebb

Short definition from Wiktionary

Noun

1. 1
   The receding movement of the tide.
2. 2
   A gradual decline.
3. 3
   A low state; a state of depression.
4. 4
   A European bunting, the corn bunting (Emberiza calandra, syns. Emberiza miliaria, Milaria calandra).

Adjective

1. 1
   low, shallow

Verb

1. 1
   to flow back or recede
2. 2
   to fall away or decline
3. 3
   to fish with stakes and nets that serve to prevent the fish from getting back into the sea with the ebb
4. 4
   To cause to flow back.