noun.
An evergreen shrub or tree (Conocarpus erectus) of coastal wetlands of tropical America and western Africa, having alternate leathery leaves and small buttonlike heads of greenish flowers.
The Century Dictionary and Cyclopedia
noun.
A common name in the West Indies of a low combreta-ceous tree, Conocarpus erecta, with very heavy, hard, and compact wood.
noun.
See buttonball.
the GNU version of the Collaborative International Dictionary of English
noun.
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 Platanus racemosa.