1. a highly poisonous protein found in the seeds of the rosary pea: inhibits protein synthesis, causing symptoms such as internal bleeding, intestinal upset, and irritation of mucous membranes.

Origin of abrin

1880–85; < Abr(us precatorius), scientific name of the rosary pea + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of abrin