The Collaborative International Dictionary of English v.0.48:

Consume \Con*sume"\ (k[o^]n*s[=u]m"), v. t. [imp. & p. p.
   Consumed (k[o^]n*s[=u]md"); p. pr. & vb. n. Consuming.]
   [L. consumere to take wholly or completely, to consume; con-
   + sumere to take; sub + emere to buy. See Redeem.]
   To destroy, as by decomposition, dissipation, waste, or fire;
   to use up; to expend; to waste; to burn up; to eat up; to
   devour.
   [1913 Webster]

         If he were putting to my house the brand
         That shall consume it.                   --Shak.
   [1913 Webster]

         Lay up for yourselves treasures in heaven, where
         neither moth nor rust doth consume.      --Matt. vi. 20
                                                  (Rev. Ver.).
   [1913 Webster]

         Let me alone . . . that I may consume them. --Ex.
                                                  xxxii. 10.

   Syn: To destroy; swallow up; ingulf; absorb; waste; exhaust;
        spend; expend; squander; lavish; dissipate.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Consume \Con*sume"\ (k[o^]n*s[=u]m"), v. i.
   To waste away slowly.
   [1913 Webster]

         Therefore, let Benedick, like covered fire,
         Consume away in sighs.                   --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

consume
    v 1: eat immoderately; "Some people can down a pound of meat in
         the course of one meal" [syn: devour, down, consume,
         go through]
    2: serve oneself to, or consume regularly; "Have another bowl of
       chicken soup!"; "I don't take sugar in my coffee" [syn:
       consume, ingest, take in, take, have] [ant:
       abstain, desist, refrain]
    3: spend extravagantly; "waste not, want not" [syn: consume,
       squander, waste, ware]
    4: destroy completely; "The fire consumed the building"
    5: use up (resources or materials); "this car consumes a lot of
       gas"; "We exhausted our savings"; "They run through 20
       bottles of wine a week" [syn: consume, eat up, use up,
       eat, deplete, exhaust, run through, wipe out]
    6: engage fully; "The effort to pass the exam consumed all his
       energy"

Moby Thesaurus II by Grady Ward, 1.0:

189 Moby Thesaurus words for "consume":
   Sanforize, abate, ablate, absorb, annihilate, assimilate, atomize,
   atrophy, attenuate, bate, be eaten away, bestow, bleed white, blow,
   break up, bring to ruin, burn down, burn up, come apart, condemn,
   confound, consecrate to, consume away, corrode, crack up, cremate,
   crumble, crumble into dust, damn, deal destruction, decay,
   decimate, decline, decompose, decrease, dedicate to, deliquesce,
   demolish, deplete, depreciate, depredate, desolate, despoil,
   destroy, devastate, devote, devour, die away, digest, diminish,
   disintegrate, disjoin, disorganize, dispatch, dispose of,
   dissipate, dissolve, dive, do in, down, drain, drain of resources,
   dribble away, drink up, drop, drop off, dry up, dwindle, eat,
   eat up, ebb, emacerate, emaciate, employ, engorge, engross, erode,
   exhaust, expend, fall, fall away, fall off, fall to pieces, finish,
   finish off, fission, fritter away, get away with, get down,
   give over to, give to, gobble, gobble up, gorge, gulp, gulp down,
   gut, gut with fire, guzzle, havoc, impoverish, incendiarize,
   incinerate, ingest, inhale, languish, lavish, lay in ruins,
   lay waste, lessen, let up, lose, macerate, melt away, molder,
   obsess, occupy, overcome, overwhelm, parch, pass, pine away,
   plummet, plunge, polish off, preoccupy, preshrink, punish,
   put away, put down, put in, ravage, raze, reduce, reduce to ashes,
   ruin, ruinate, run low, run to seed, run to waste, sag, sear,
   sew up, shift, shipwreck, shrink, shrivel, sink, spend, spill,
   split, squander, subside, suck dry, surround, swallow, swallow up,
   swill, tail off, take down, take in, thin, throw away,
   throw into disorder, total, tuck in, unleash destruction,
   unleash the hurricane, upheave, use up, vandalize, vaporize, wane,
   waste, waste away, wear, wear away, wear out, weazen, while,
   while away, wile, wither, wither away, wizen, wolf, wrack,
   wreak havoc, wreck