The Collaborative International Dictionary of English v.0.48:
gumwood \gumwood\ n. wood or lumber from any of various gum trees especially the sweet gum. Syn: gum. [WordNet 1.5]WordNet (r) 3.0 (2006):
gumwood n 1: wood or lumber from any of various gum trees especially the sweet gum [syn: gumwood, gum]