The Collaborative International Dictionary of English v.0.48:

Lucky \Luck"y\, a. [Compar. Luckier; superl. Luckiest.]
   1. Favored by luck; fortunate; meeting with good success or
      good fortune; -- said of persons; as, a lucky adventurer.
      " Lucky wight." --Spenser.
      [1913 Webster]

   2. Producing, or resulting in, good by chance, or
      unexpectedly; favorable; auspicious; fortunate; as, a
      lucky mistake; a lucky cast; a lucky hour.
      [1913 Webster]

            We doubt not of a fair and lucky war. --Shak.

   Syn: Successful; fortunate; prosperous; auspicious.
        [1913 Webster]