Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A tropical South American tree (Dipteryx odorata) in the pea family, having pulpy, egg-shaped, one-seeded pods with fragrant seeds containing coumarin.
  • noun The seed of this tree, formerly widely used as a flavoring for food or tobacco. Extracts from tonka beans have been banned as food additives in the United States.

from The Century Dictionary.

  • noun The seed of the cuamara, Dipteryx odorata, a tall tree of Venezuela, Guiana, and some neighboring regions.
  • noun The tree producing the tonka-bean. See cuamara.

from the GNU version of the Collaborative International Dictionary of English.

  • (Bot.) 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 tonquin bean.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The black wrinkled seed of Dipteryx odorata, a neotropical legume tree, used as a perfume and vanilla substitute.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun tall tropical South American tree having pulpy egg-shaped pods of fragrant black almond-shaped seeds used for flavoring
  • noun fragrant black nutlike seeds of the tonka bean tree; used in perfumes and medicines and as a substitute for vanilla

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Perhaps from Galibi tonka.]

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