[1] : The Collaborative International Dictionary of English v.0.48

ebb \ebb\, v. i. imp.  p. p. ebbed; p. pr.  vb. n.
   ebbing. as. ebbian; akin to d.  g. ebben, dan. ebbe. see
   2d ebb.
   1. to flow back; to return, as the water of a tide toward the
      ocean; -- opposed to flow.
      1913 webster

            that power who bids the ocean ebb and flow. --pope.
      1913 webster

   2. to return or fall back from a better to a worse state; to
      decline; to decay; to recede.
      1913 webster

            the hours of life ebb fast.           --blackmore.

   syn: to recede; retire; withdraw; decay; decrease; wane;
        sink; lower.
        1913 webster
see also:
ebbed ebbing ebb flow 

[2] : WordNet (r) 2.0

ebbing
     n : a gradual decline in size or strength or power or number
         syn: ebb, wane
see also:
ebb wane 

Ebbing >> E Words
Ebbing, definition of term: Ebbing
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