say it: BAWL-suh
balsa is a noun meaning "strong lightweight wood of the balsa tree used especially for floats". It carries 2 recorded senses.
strong lightweight wood of the balsa tree used especially for floats
forest tree of lowland Central America having a strong very light wood; used for making floats and rafts and in crafts
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for balsa come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.