The Collaborative International Dictionary of English v.0.48:

Sapodilla \Sap`o*dil"la\, n. [Sp. zapote, sapotillo, zapotillo,
   Mexican cochit-zapotl. Cf. Sapota.] (Bot.)
   A tall, evergeen, tropical American tree (Achras Sapota);
   also, its edible fruit, the sapodilla plum. [Written also
   sapadillo, sappadillo, sappodilla, and zapotilla.]
   [1913 Webster]

   Sapodilla plum (Bot.), the fruit of Achras Sapota. It is
      about the size of an ordinary quince, having a rough,
      brittle, dull brown rind, the flesh being of a dirty
      yellowish white color, very soft, and deliciously sweet.
      Called also naseberry. It is eatable only when it begins
      to be spotted, and is much used in desserts.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Zapotilla \Zap`o*til"la\, n. (Bot.)
   See Sapodilla.
   [1913 Webster]