Category:Tonka bean

Ton"ka bean`. Etym: [cf. F. onca, tonka.] (bot.)

Defn: the seed of a leguminous tree (dipteryx odorata), native of Guiana. It has a peculiarly agreeable smell, and is employed in the Scenting of snuff. Called also tiononquin bean. [written also tonca Bean, tonga bean.]