The Collaborative International Dictionary of English v.0.48:

peachwood \peach"wood`\ (p[=e]ch"w[oo^]d`) n.
   1. A tropical tree Caesalpinia echinata, having a prickly
      trunk; its heavy red wood yields a red dye and is used for
      cabinetry.

   Syn: Caesalpinia echinata.
        [WordNet 1.5]

   2. The heavy red wood of the Caesalpinia echinata;
      brazilwood; pernambuco wood.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

peachwood
    n 1: tropical tree with prickly trunk; its heavy red wood yields
         a red dye and is used for cabinetry [syn: brazilwood,
         peachwood, peach-wood, pernambuco wood, Caesalpinia
         echinata]