The Collaborative International Dictionary of English v.0.48:

Baroque \Ba*roque"\, a. [F.; cf. It. barocco.] (Arch.)
   1. of, pertaining to, or characteristic of, an artistic style
      common in the 17th century, characterized by the use of
      complex and elaborate ornamentation, curved rather than
      straight lines, and, in music a high degree of
      embellishment.
      [PJC]

   2. Hence, overly complicated, or ornamented to excess; in bad
      taste; grotesque; odd.
      [1913 Webster +PJC]

   3. Irregular in form; -- said esp. of a pearl.
      [Webster 1913 Suppl.]

Jargon File (4.4.4, 14 Aug 2003):

baroque
 adj.

   [common] Feature-encrusted; complex; gaudy; verging on excessive.
Said
   of hardware or (esp.) software designs, this has many of the
   connotations of elephantine or monstrosity but is less extreme
and
   not pejorative in itself. "Metafont even has features to introduce
   random variations to its letterform output. Now that is baroque!" See
   also rococo.


Moby Thesaurus II by Grady Ward, 1.0:

60 Moby Thesaurus words for "baroque":
   Gothic, arabesque, bizarre, brain-born, busy, chichi, deformed,
   dream-built, elaborate, elegant, embellished, extravagant,
   fanciful, fancy, fancy-born, fancy-built, fancy-woven, fantasque,
   fantastic, fine, flamboyant, florid, flowery, freak, freakish,
   frilly, fussy, gilt, grotesque, high-wrought, labored, luscious,
   luxuriant, luxurious, maggoty, malformed, misbegotten, misshapen,
   monstrous, moresque, notional, ornamented, ornate, ostentatious,
   outlandish, overelaborate, overelegant, overlabored, overworked,
   overwrought, picturesque, preposterous, pretty-pretty, rich,
   rococo, scrolled, teratogenic, teratoid, whimsical, wild