The Collaborative International Dictionary of English v.0.48:

Swink \Swink\, v. i. [imp. Swank, Swonk; p. p. Swonken; p.
   pr. & vb. n. Swinking.] [AS. swincan, akin to swingan. See
   Swing.]
   To labor; to toil; to salve. [Obs. or Archaic]
   [1913 Webster]

         Or swink with his hands and labor.       --Chaucer.
   [1913 Webster]

         For which men swink and sweat incessantly. --Spenser.
   [1913 Webster]

         The swinking crowd at every stroke pant "Ho." --Sir
                                                  Samuel
                                                  Freguson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

swank
    adj 1: imposingly fashionable and elegant; "a swank apartment"
           [syn: swank, swanky]
    n 1: elegance by virtue of being fashionable [syn: chic,
         chicness, chichi, modishness, smartness,
         stylishness, swank, last word]
    v 1: display proudly; act ostentatiously or pretentiously; "he
         showed off his new sports car" [syn: flaunt, flash,
         show off, ostentate, swank]

Moby Thesaurus II by Grady Ward, 1.0:

112 Moby Thesaurus words for "swank":
   Babylonian, Corinthian, airs, awe-inspiring, awful, barbaric,
   bounce, brave show, braw, chic, chichi, classy, clothes-conscious,
   cock, cosmopolitan, dapper, dashing, deluxe, dressed to advantage,
   dressed to kill, elaborate, elegant, exquisite, extravagant, fancy,
   fine, flamboyant, genteel, glorious, grand, grandiose,
   highfaluting ways, imposing, impressive, jaunty, lofty airs,
   look big, luxurious, magnificent, majestic, natty, neat, nifty,
   nobby, noble, ostentatious, palatial, peacock, peacockery,
   peacockish, peacockishness, peacocky, plush, pontificate, posh,
   prance, pretensions, pretentious, princely, proud, put on,
   put on airs, put on side, recherche, ritz it, ritzy, sharp, side,
   sleek, smart, smug, snappy, snazzy, soigne, soignee, sophisticated,
   spiffy, splashy, splendacious, splendid, splendiferous, spruce,
   stalk, stately, strut, strutting, style-conscious, sumptuous,
   superb, superfancy, superfine, swagger, swaggering, swanky, swash,
   swashbuckle, swashbucklering, swashbucklery, swashbuckling, swell,
   swell it, swish, tony, trendy, tricksy, trig, trim,
   vain pretensions, vaporing, well-dressed, well-groomed, with-it