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tonka bean

[tong-kuh] /ˈtɒŋ kə/
noun
1.
the fragrant, black almond-shaped seed of a tall tree belonging to the genus Dipteryx (or Coumarouna), of the legume family, especially D. odorata, of tropical South America, used in perfumes, as a source of coumarin, and as a substitute for vanilla.
2.
the tree itself.
Origin
1790-1800
1790-1800; tonka probably < Tupi tõka
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for tonka bean

tonka bean

/ˈtɒŋkə/
noun
1.
a tall leguminous tree, Coumarouna odorata, of tropical America, having fragrant black almond-shaped seeds
2.
the seeds of this tree, used in the manufacture of perfumes, snuff, etc
Word Origin
C18: probably from Tupi tonka
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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