The Collaborative International Dictionary of English v.0.48:

Splurge \Splurge\ (spl[^u]rj), n.
   A blustering demonstration, or great effort; a great display.
   [Slang, U.S.] --Bartlett.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Splurge \Splurge\, v. i.
   To make a great display in any way, especially in oratory.
   [Slang, U.S.]
   [1913 Webster]
   [1913 Webster]
   [1913 Webster]

WordNet (r) 3.0 (2006):

splurge
    n 1: an ostentatious display (of effort or extravagance etc.)
    2: any act of immoderate indulgence; "an orgy of shopping"; "an
       emotional binge"; "a splurge of spending" [syn: orgy,
       binge, splurge]
    v 1: indulge oneself; "I splurged on a new TV" [syn: splurge,
         fling]
    2: be showy or ostentatious

Moby Thesaurus II by Grady Ward, 1.0:

84 Moby Thesaurus words for "splurge":
   access, binge, blazon, bravura, brilliancy, budget, burst, cost,
   cost out, cut a dash, cut a figure, cut a swath, daring, dash,
   dazzle, demonstration, disburse, display, douse, dramatics, eclat,
   etalage, exhibition, exhibitionism, expend, extravagance,
   false front, fanfaronade, figure, flair, flaunt, flaunting, fling,
   flourish, fork out, glare, glitter, go through, histrionics,
   incur costs, indulgence, invest, lay out, make a figure,
   make a show, make a splash, manifestation, open the purse, orgy,
   ostentatiousness, outburst, outlay, pageant, pageantry, parade,
   pay, pay out, plash, put out, rampage, run through, schedule, sham,
   shell out, shine, show, showing-off, sink money in, slop, slosh,
   spatter, spectacle, spend, splash, splatter, splosh, spree,
   spurtle, squander, staginess, swash, theatrics, throw money around,
   vaunt