The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

   2. To bulge.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bilge \Bilge\, v. t.
   1. (Naut.) To fracture the bilge of, or stave in the bottom
      of (a ship or other vessel).
      [1913 Webster]

   2. To cause to bulge.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bilge \Bilge\, n. [A different orthography of bulge, of same
   origin as belly. Cf. Belly, Bulge.]
   1. The protuberant part of a cask, which is usually in the
      middle.
      [1913 Webster]

   2. (Naut.) That part of a ship's hull or bottom which is
      broadest and most nearly flat, and on which she would rest
      if aground.
      [1913 Webster]

   3. Bilge water.
      [1913 Webster]

   Bilge free (Naut.), stowed in such a way that the bilge is
      clear of everything; -- said of a cask.

   Bilge pump, a pump to draw the bilge water from the gold of
      a ship.

   Bilge water (Naut.), water which collects in the bilge or
      bottom of a ship or other vessel. It is often allowed to
      remain till it becomes very offensive.

   Bilge ways, the timbers which support the cradle of a ship
      upon the ways, and which slide upon the launching ways in
      launching the vessel.
      [1913 Webster]

WordNet (r) 3.0 (2006):

bilge
    n 1: water accumulated in the bilge of a ship [syn: bilge,
         bilge water]
    2: where the sides of the vessel curve in to form the bottom
    v 1: cause to leak; "the collision bilged the vessel"
    2: take in water at the bilge; "the tanker bilged" [syn:
       bilge, take in water]

Moby Thesaurus II by Grady Ward, 1.0:

110 Moby Thesaurus words for "bilge":
   balderdash, baloney, bilgewater, blah, blah-blah, blain, bleb,
   blister, blob, bop, bosh, boss, bow, bubble, bulb, bulge, bull,
   bulla, bullshit, bump, bunch, bunk, bunkum, burl, bushwa, button,
   cahot, carrion, chine, clump, condyle, convex, crap, dishwater,
   ditchwater, dowel, ear, flange, flap, flapdoodle, gall, garbage,
   gas, gnarl, guff, gup, handle, hill, hogwash, hokum, hooey,
   hot air, hump, hunch, jog, joggle, knob, knot, knur, knurl, lip,
   loop, lump, malarkey, mole, moonshine, mountain, nevus, nub,
   nubbin, nubble, offal, offscourings, papilloma, peg, piffle,
   poppycock, refuse, rib, ridge, riffraff, ring, rot, rubbish, scat,
   scum, scurf, sewage, sewerage, shit, shoulder, slop, slops, slough,
   spine, stud, style, swill, tab, tommyrot, trash, tripe, tubercle,
   tubercule, verruca, vesicle, wale, wart, welt, wind