Meaning of bezoar

be•zoar

Pronunciation: (bē'zôr, -zōr), [key]
— n.
  1. a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
  2. a counterpoison or antidote.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.