Source : Webster's Revised Unabridged Dictionary (1913)

Manchineel \Man`chi*neel"\, n. [Sp. manzanillo, fr. manzana an
   apple, fr. L. malum Matianum a kind of apple. So called from
   its apple-like fruit.] (Bot.)
   A euphorbiaceous tree ({Hippomane Mancinella}) of tropical
   America, having a poisonous and blistering milky juice, and
   poisonous acrid fruit somewhat resembling an apple.

   {Bastard manchineel}, a tree ({Cameraria latifolia}) of the
      East Indies, having similar poisonous properties.
      --Lindley.