Shoaling \Shoal"ing\, a. Becoming shallow gradually. "A shoaling estuary." --Lyell. [1913 Webster]
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]