The Collaborative International Dictionary of English v.0.48:

Gurge \Gurge\ (g[^u]rj), n. [L. gurges.]
   A whirlpool. [Obs.]
   [1913 Webster]

         The plain, wherein a black bituminous gurge
         Boils out from under ground.             --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Gurge \Gurge\, v. t. [See Gorge.]
   To swallow up. [Obs.]
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "gurge":
   Charybdis, Maelstrom, back stream, backflow, backwash, backwater,
   centrifugate, centrifuge, countercurrent, counterflow, counterflux,
   dizzy round, eddy, gulf, gyre, maelstrom, pirouette, purl,
   rat race, reel, refluence, reflux, regurgitation, round, spin,
   surge, swirl, turn, twirl, vortex, wheel, whirl, whirligig,
   whirlpool, whirlwind, whorl