tonka bean

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Related to Tonqua bean: coumarin

ton·ka bean

 (tŏng′kə)
n.
1. A tropical South American tree (Dipteryx odorata) in the pea family, having pulpy, egg-shaped, one-seeded pods with fragrant seeds containing coumarin.
2. 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.

[Perhaps from Galibi tonka.]

tonka bean

(ˈtɒŋkə)
n
1. (Plants) a tall leguminous tree, Coumarouna odorata, of tropical America, having fragrant black almond-shaped seeds
2. (Plants) the seeds of this tree, used in the manufacture of perfumes, snuff, etc
[C18: probably from Tupi tonka]

ton′ka bean`

(ˈtɒŋ kə)
n.
1. the fragrant black seed of a tropical American tree, Dipteryx odorata, or related species: used in perfumes, as a source of coumarin, and as a vanilla substitute.
2. the tree itself.
[1790–1800; probably < Tupi tõka]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tonka bean - fragrant black nutlike seeds of the tonka bean treetonka bean - fragrant black nutlike seeds of the tonka bean tree; used in perfumes and medicines and as a substitute for vanilla
bean - any of various seeds or fruits that are beans or resemble beans
2.tonka bean - tall tropical South American tree having pulpy egg-shaped pods of fragrant black almond-shaped seeds used for flavoringtonka bean - tall tropical South American tree having pulpy egg-shaped pods of fragrant black almond-shaped seeds used for flavoring
Coumarouna, Dipteryx, genus Coumarouna, genus Dipteryx - tropical American trees: tonka beans
bean tree - any of several trees having seedpods as fruits