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sword bean

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noun
  1. a twining vine, Canavalia gladiata, of the legume family, found in the tropics of the Eastern Hemisphere, having large, showy, pealike flowers and reddish-brown seeds.
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Origin of sword bean

First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018