"board made of two or more thin layers of wood bonded together and arranged so that the grain of one runs at right angles to that of the next," 1907, from ply (n.) + wood (n.).
"small poisonous tree of the West Indies and southern Florida," 1721, from poison (n.) + wood (n.).
1650s, "close-grained wood of various Brazilian trees," from rose (n.1) + wood (n.). The name is due to the scent of some species when freshly cut. Later applied to similar woods from other sources.