Source : Webster's Revised Unabridged Dictionary (1913)

Morello \Mo*rel"lo\, n. [Cf. It. morello blackish, OF. morel.
   Cf. {Morelle}.] (Bot.)
   A kind of nearly black cherry with dark red flesh and juice,
   -- used chiefly for preserving.

Source : WordNet®

morello
     n 1: any of several cultivated sour cherry trees bearing fruit
          with dark skin and juice [syn: {Prunus cerasus austera}]
     2: cultivated sour cherry with dark-colored skin and juice