The Collaborative International Dictionary of English v.0.48:

Extricate \Ex"tri*cate\ ([e^]ks"tr[i^]*k[=a]t), v. t. [imp. & p.
   p. Extricated([e^]ks"tr[i^]*k[=a]`t[e^]d); p. pr. & vb. n.
   Extricating([e^]ks"tr[i^]*k[=a]`t[i^]ng).] [L. extricatus,
   p. p. of extricare to extricate; ex out + tricae trifles,
   impediments, perplexities. Cf. Intricate.]
   1. To free, as from difficulties or perplexities; to
      disentangle; to disembarrass; as, to extricate a person
      from debt, peril, etc.
      [1913 Webster]

            We had now extricated ourselves from the various
            labyrinths and defiles.               --Eustace.
      [1913 Webster]

   2. To cause to be emitted or evolved; as, to extricate heat
      or moisture.

   Syn: To disentangle; disembarrass; disengage; relieve;
        evolve; set free; liberate.
        [1913 Webster]

WordNet (r) 3.0 (2006):

extricate
    v 1: release from entanglement of difficulty; "I cannot
         extricate myself from this task" [syn: extricate,
         untangle, disentangle, disencumber]

Moby Thesaurus II by Grady Ward, 1.0:

71 Moby Thesaurus words for "extricate":
   avulse, break loose, break out, clear, cut loose, cut out, deliver,
   deracinate, dig out, dig up, disburden, disembarrass, disembroil,
   disencumber, disengage, disentangle, disinvolve, dislodge, draw,
   draw out, dredge, dredge up, eradicate, evolve, evulse, excavate,
   excise, exsect, extract, free, free up, get out, gouge out,
   grub up, liberate, mine, pick out, pluck out, pluck up, pull,
   pull out, pull up, quarry, rake out, ransom, recover, redeem,
   release, remove, rescue, retrieve, rip out, root out, root up,
   salvage, save, set free, take out, tear loose, tear out, unclutter,
   unearth, unknot, unravel, unscramble, unsnarl, untangle, uproot,
   weed out, withdraw, wrest out