- any of several tropical American trees (genus Ochroma) of the bombax family that yield an extremely light and buoyant wood used for rafts, model airplanes, etc.
- the wood
- a raft, esp. one made up of a frame resting on cylindrical floats
Origin of balsaSpanish
- a. A tropical American tree (Ochroma pyramidale) having soft wood that is very light in weight and is used as a substitute for cork in insulation, floats, and crafts such as model airplanes.b. The wood of this tree. Also called corkwood .
- A raft consisting of a frame fastened to buoyant cylinders of wood or metal.
Origin of balsaSpanish raft, balsa tree (used to make rafts) from Old Spanish raft probably of pre-Roman Iberian origin
(countable and uncountable, plural balsas)