• WordNet 3.6
    • n barbasco West Indian shrub or small tree having leathery saponaceous leaves and extremely hard wood
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Century Dictionary and Cyclopedia
    • n barbasco A name in Porto Rico, Cuba, and other Spanish-speaking countries of a number of shrubs and trees bearing poisonous seeds. It is applied especially to Jacquinia armillaris, the joewood or bracelet-wood of the West Indies, and to species of several genera belonging to the soapberry family, such as Serjania, Paullinia, Magonia, and Harpullia. The seeds, stem-bark, and root-bark of many of these plants are used to poison fish.
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In literature:

Fishing with barbasco, 169.
"The Andes and the Amazon" by James Orton