Source : Webster's Revised Unabridged Dictionary (1913)

Mangosteen \Man"go*steen\, Mangostan \Man"go*stan\, n. [Malay
   mangusta, mangis.] (Bot.)
   A tree of the East Indies of the genus {Garcinia} ({G.
   Mangostana}). The tree grows to the height of eighteen feet,
   and bears fruit also called mangosteen, of the size of a
   small apple, the pulp of which is very delicious food.