lewisite
lew.is.ite \'lu:-*-.si-t\ n [Winford Lee Lewis -1943 Am chemist] : a colorless vesicant produced by a reaction of acetylene with arsenic tr ichloride and developed as a poison gas for war use
Webster's English Dictionarylew.is.ite \'lu:-*-.si-t\ n [Winford Lee Lewis -1943 Am chemist] : a colorless vesicant produced by a reaction of acetylene with arsenic tr ichloride and developed as a poison gas for war use