The Collaborative International Dictionary of English v.0.48:

Maraschino \Ma`ra*schi"no\, n. [It., fr. marasca, amarasca, a
   sour cherry, L. amarus bitter.]
   A liqueur distilled from fermented cherry juice, and flavored
   with the pit of a variety of cherry which grows in Dalmatia.
   [1913 Webster]

WordNet (r) 3.0 (2006):

maraschino
    n 1: distilled from fermented juice of bitter wild marasca
         cherries [syn: maraschino, maraschino liqueur]
    2: cherry preserved in true or imitation maraschino liqueur
       [syn: maraschino, maraschino cherry]