Buttonwood
Pronunciation : But"ton*wood`
Part of Speech : n.
Definition : Defn: The Platanus occidentalis, or American plane tree, a large tree, producing rough balls, from which it is named; -- called also buttonball tree, and, in some parts of the United States, sycamore. The California buttonwood is P. racemosa.
(Bot.)
Source : Webster's Unabridged Dictionary, 1913