The Collaborative International Dictionary of English v.0.48:

hazelwood \hazelwood\ n.
   A reddish-brown wood and lumber from the heartwood of the
   sweet gum tree.

   Syn: sweet gum, satin walnut, red gum.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

hazelwood
    n 1: reddish-brown wood and lumber from heartwood of the sweet
         gum tree used to make furniture [syn: sweet gum, satin
         walnut, hazelwood, red gum]