Source : Webster's Revised Unabridged Dictionary (1913)

Curare \Cu*ra"re\ Curari \Cu*ra"ri\(k?-r?"r?), n. [Native name.
   Cf. {Wourall}.]
   A black resinoid extract prepared by the South American
   Indians from the bark of several species of {Strychnos} ({S.
   toxifera}, etc.). It sometimes has little effect when taken
   internally, but is quickly fatal when introduced into the
   blood, and used by the Indians as an arrow poison. [Written
   also {urari}, {woorali}, {woorari}, etc.]