WordNet (r) 3.0 (2006):

remains
    n 1: any object that is left unused or still extant; "I threw
         out the remains of my dinner"
    2: the dead body of a human being; "the cadaver was intended for
       dissection"; "the end of the police search was the discovery
       of a corpse"; "the murderer confessed that he threw the stiff
       in the river"; "honor comes to bless the turf that wraps
       their clay" [syn: cadaver, corpse, stiff, clay,
       remains]

Moby Thesaurus II by Grady Ward, 1.0:

122 Moby Thesaurus words for "remains":
   account, afterglow, afterimage, ancient manuscript, annals,
   antique, antiquity, archaism, artifact, ashes, balance, body,
   bones, butt, butt end, cadaver, candle ends, carcass, carrion,
   catalog, cave painting, chaff, chronicle, clay, corpse,
   corpus delicti, correspondence, crowbait, dead body, dead man,
   dead person, debris, decedent, detritus, documentation, dry bones,
   dust, earth, embalmed corpse, end, eolith, fag end, filings,
   food for worms, fossil, heel, history, holdover, husks, inventory,
   late lamented, leavings, leftovers, letters, list, memorial,
   mezzolith, microlith, mortal remains, mummification, mummy,
   neolith, odds and ends, offscourings, organic remains, orts,
   paleolith, parings, petrification, petrified forest,
   petrified wood, petroglyph, pipe roll, plateaulith, rags, record,
   recording, refuse, register, registry, relic, relics, reliquiae,
   remainder, remnant, residual, residue, residuum, rest, roach, roll,
   rolls, roster, rota, rubbish, ruin, ruins, rump, sawdust,
   scourings, scraps, scroll, shadow, shavings, skeleton, stiff,
   straw, stubble, stump, survival, sweepings, table,
   tenement of clay, the dead, the deceased, the defunct,
   the departed, the loved one, token, trace, vestige, waste