The Collaborative International Dictionary of English v.0.48:

Satinwood \Sat"in*wood`\, n. (Bot.)
   The hard, lemon-colored, fragrant wood of an East Indian tree
   (Chloroxylon Swietenia). It takes a lustrous finish, and is
   used in cabinetwork. The name is also given to the wood of a
   species of prickly ash (Xanthoxylum Caribaeum) growing in
   Florida and the West Indies.
   [1913 Webster]

WordNet (r) 3.0 (2006):

satinwood
    n 1: West Indian tree with smooth lustrous and slightly oily
         wood [syn: satinwood, West Indian satinwood,
         Zanthoxylum flavum]
    2: hard yellowish wood of a satinwood tree having a satiny
       luster; used for fine cabinetwork and tools
    3: East Indian tree with valuable hard lustrous yellowish wood;
       [syn: satinwood, satinwood tree, Chloroxylon swietenia]