Source : Webster's Revised Unabridged Dictionary (1913)

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 Games
     n 1: the modern revival of the ancient games held once every 4
          years in a selected country [syn: {Olympics}, {Olympiad}]
     2: the ancient Panhellenic celebration at Olympia in honor of
        Zeus; held every 4 years beginning in 776 BC [syn: {Olympian
        Games}]