Source : Webster's Revised Unabridged Dictionary (1913)

Bully tree \Bul"ly tree`\ (Bot.)
   The name of several West Indian trees of the order
   {Sapotace[ae]}, as {Dipholis nigra} and species of {Sapota}
   and {Mimusops}. Most of them yield a substance closely
   resembling gutta-percha.

Source : WordNet®

bully tree
     n : a hard-wooded tropical tree yielding balata gum and heavy
         red timber [syn: {balata}, {balata tree}, {beefwood}, {Manilkara
         bidentata}]