bezoar

noun
be·​zoar | \ˈbē-ˌzȯr \

Definition of bezoar 

: any of various calculi found chiefly in the gastrointestinal organs and formerly believed to possess magical properties

called also bezoar stone

First Known Use of bezoar

1577, in the meaning defined above

History and Etymology for bezoar

Middle French, from Medieval Latin, from Arabic dialect bezuwār, from Arabic bāzahr, from Persian pād-zahr, from pād protecting (against) + zahr poison

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The first known use of bezoar was in 1577

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bezoar

noun
be·​zoar | \ˈbē-ˌzō(ə)r, -ˌzȯ(ə)r \

Medical Definition of bezoar 

: any of various calculi found in the gastrointestinal organs especially of ruminants

called also bezoar stone

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