The Collaborative International Dictionary of English v.0.48:

Cherimoyer \Cher`i*moy"er\, n. [F. ch['e]rimolier.] (Bot.)
   1. A small downy-leaved tree (Anona Cherimolia), with
      fragrant flowers. It is a native of Peru.
      [1913 Webster]

   2. Its delicious fruit, which is succulent, dark purple, and
      similar to the custard apple of the West Indies.
      [1913 Webster]