shoaling

from The Collaborative International Dictionary of English v.0.48
Shoaling \Shoal"ing\, a.
   Becoming shallow gradually. "A shoaling estuary." --Lyell.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Shoal \Shoal\, v. i. [imp. & p. p. {Shoaled}; p. pr. & vb. n.
   {Shoaling}.]
   To assemble in a multitude; to throng; as, the fishes shoaled
   about the place. --Chapman.
   [1913 Webster]
    

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