buttonwood

noun

• 1 (also buttonwood tree) North American an American plane tree. Also called sycamore in North America.

  • Genus Platanus, family Platanaceae: several species, in particular P. occidentalis (also called buttonball tree), which is the largest deciduous tree in the US and is grown for ornament and timber

• 2either of two mangroves found mainly in tropical America, used in the production of tanbark and for charcoal.

  • Conocarpus erectus (the button mangrove) and Laguncularia racemosa, family Combretaceae