The Collaborative International Dictionary of English v.0.48:

Garnish \Gar"nish\, v. t. [imp. & p. p. Garnished; p. pr. &
   vb. n. Garnishing.] [OE. garnischen, garnissen, OF. garnir
   to provide, strengthen, prepare, garnish, warn, F. garnir to
   provide, furnish, garnish, -- of German origin; cf. OHG.
   warn[=o]n to provide, equip; akin to G. wahren to watch, E.
   aware, ware, wary, and cf. also E. warn. See Wary, -ish,
   and cf. Garment, Garrison.]
   1. To decorate with ornamental appendages; to set off; to
      adorn; to embellish.
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            All within with flowers was garnished. --Spenser.
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   2. (Cookery) To ornament, as a dish, with something laid
      about it; as, a dish garnished with parsley.
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   3. To furnish; to supply.
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   4. To fit with fetters. [Cant] --Johnson.
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   5. (Law) To warn by garnishment; to give notice to; to
      garnishee. See Garnishee, v. t. --Cowell.
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Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "garnished":
   adorned, beaded, bedecked, bedizened, befrilled, bejeweled,
   beribboned, bespangled, decked out, decorated, embellished,
   feathered, festooned, figured, flowered, jeweled, ornamented,
   plumed, spangled, spangly, studded, tricked out, trimmed,
   wreathed