The Collaborative International Dictionary of English v.0.48:

Pyre \Pyre\, n. [L. pure, Gr. ?, fr. ? fire. See Fire.]
   A funeral pile; a combustible heap on which the dead are
   burned; hence, any pile to be burnt.
   [1913 Webster]

         For nine long nights, through all the dusky air,
         The pyres thick flaming shot a dismal glare. --Pope.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pyre
    n 1: wood heaped for burning a dead body as a funeral rite [syn:
         pyre, funeral pyre]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "pyre":
   backfire, balefire, beacon, beacon fire, blaze, bonfire, burning,
   burning ghat, campfire, cheerful fire, combustion, conflagration,
   corposant, cozy fire, crackling fire, cremation, crematory,
   death fire, fen fire, fire, flame, flashing point, flicker,
   flickering flame, forest fire, fox fire, funeral pile,
   funeral pyre, ignis fatuus, ignition, incineration, ingle,
   lambent flame, marshfire, open fire, prairie fire, raging fire,
   reduction to ashes, sea of flames, sheet of fire, signal beacon,
   smudge fire, three-alarm fire, two-alarm fire, watch fire,
   wildfire, witch fire