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单词 tonka bean
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ton′ka bean′  (tong′kə),USA pronunciation 
  1. the fragrant, black almond-shaped seed of a tall tree belonging to the genus Dipteryx (or Coumarouna), of the legume family, esp. D. odorata, of tropical South America, used in perfumes, as a source of coumarin, and as a substitute for vanilla.
  2. the tree itself.
  • Tupi tõka
  • tonka probably 1790–1800

Collins Concise English Dictionary © HarperCollins Publishers::
tonka bean /ˈtɒŋkə/ n
  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
Etymology: 18th Century: probably from Tupi tonka
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更新时间:2026/10/11 20:04:35