Webster’s Revised Unabridged Dictionary · 1913
Piassava
Pi·as′sa·va (pĭ·ăs′sȧ·vȧ), 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 piaçaba and piasaba.