Definition of mapepire balsain in US English:

mapepire balsain

noun

Caribbean, Trinidad
  • The Central American fer de lance, Bothrops asper.

Origin

Late 19th century; earliest use found in Journal Field Naturalists' Club (Trinidad). From mapepire + French Creole balsan, valsan from French valsant waltzing (from the typical repeated defensive coiling and circling motion in self-defence or when settling down).