The Collaborative International Dictionary of English v.0.48:

Gelt \Gelt\, n. [See 1st Geld.]
   Trubute, tax. [Obs.]
   [1913 Webster]

         All these the king granted unto them . . . free from
         all gelts and payments, in a most full and ample
         manner.                                  --Fuller.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Gelt \Gelt\, n. [See Gelt, v. t.]
   A gelding. [Obs.] --Mortimer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Gelt \Gelt\, n.
   Gilding; tinsel. [Obs.] --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

gelt
    n 1: informal terms for money [syn: boodle, bread,
         cabbage, clams, dinero, dough, gelt, kale,
         lettuce, lolly, lucre, loot, moolah, pelf,
         scratch, shekels, simoleons, sugar, wampum]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "gelt":
   blunt, boodle, brass, bread, bucks, cabbage, chips, dinero, dough,
   filthy lucre, gilt, grease, green, green stuff, jack, kale,
   lettuce, loot, lucre, mazuma, moolah, mopus, oil of palms,
   ointment, oof, ooftish, rhino, rocks, shekels, simoleons,
   spondulics, sugar, the needful, tin, wampum