Bassia latifolia

from The Collaborative International Dictionary of English v.0.48

Mahwa tree \Mah"wa tree`\ (Bot.)
   An East Indian sapotaceous tree ({Bassia latifolia}, and also
   {Bassia butyracea}), whose timber is used for wagon wheels,
   and the flowers for food and in preparing an intoxicating
   drink. It is one of the butter trees. The oil, known as mahwa
   and yallah, is obtained from the kernels of the fruit.
   [1913 Webster]