Source : Webster's Revised Unabridged Dictionary (1913)

Piassava \Pi*as"sa*va\, n. [Pg. piasaba.]
   A fibrous product of two Brazilian palm trees ({Attalea
   funifera} and {Leopoldinia Piassaba}), -- used in making
   brooms, and for other purposes. Called also {pia[,c]aba} and
   {piasaba}.