Source : Webster's Revised Unabridged Dictionary (1913)

Ingrowing \In"grow`ing\, a.
   Growing or appearing to grow into some other substance.

   {Ingrowing nail}, one whose edges are becoming imbedded in
      the adjacent flesh.

Source : WordNet®

ingrowing
     adj : growing abnormally into the flesh; "an ingrown toenail"
           [syn: {ingrown}]