Source : Webster's Revised Unabridged Dictionary (1913)

Algarot \Al"ga*rot\, Algaroth \Al"ga*roth\, n. [F. algaroth, fr.
   the name of the inventor, Algarotti.] (Med.)
   A term used for the Powder of Algaroth, a white powder which
   is a compound of trichloride and trioxide of antimony. It was
   formerly used in medicine as an emetic, purgative, and
   diaphoretic.