Source : Webster's Revised Unabridged Dictionary (1913)

Olympic \O*lym"pic\, or Olympian \O*lym"pi*an\, games \games\ .
   A modified revival of the ancient Olympian games, consisting
   of international athletic games, races, etc., now held once
   in four years, the first having been at Athens in 1896.

Olympian \O*lym"pi*an\ (-an), Olympic \O*lym"pic\ (-p[i^]k), a.
   [L. Olympius, Olympicus, Gr. 'Oly`mpios, 'Olympiko`s, fr.
   'O`lympos: cf. F. olympique. See {Olympiad}.]
   Of or pertaining to Olympus, a mountain of Thessaly, fabled
   as the seat of the gods, or to Olympia, a small plain in
   Elis.

   {Olympic games}, or {Olympics} (Greek Antiq.), the greatest
      of the national festivals of the ancient Greeks,
      consisting of athletic games and races, dedicated to
      Olympian Zeus, celebrated once in four years at Olympia,
      and continuing five days.

Source : WordNet®

Olympic
     adj 1: of or relating to the Olympic Games; "Olympic winners"
     2: of the region of Olympia in Greece or its inhabitants;
        "Olympian plain" [syn: {Olympian}]