Source : Webster's Revised Unabridged Dictionary (1913)

Bilge \Bilge\ (b[i^]lj), v. i. [imp. & p. p. {Bilged}
   (b[i^]ljd); p. pr. & vb. n. {Bilging}.]
   1. (Naut.) To suffer a fracture in the bilge; to spring a
      leak by a fracture in the bilge.

   2. To bulge.