The Collaborative International Dictionary of English v.0.48:

Curarine \Cu"ra*rine\ (k?"r?-r?n or k?-r?"r?n; 104), n. (Chem.)
   A deadly alkaloid extracted from the curare poison and from
   the Strychnos toxifera. It is obtained in crystalline
   colorless salts.
   [1913 Webster]