Source : Webster's Revised Unabridged Dictionary (1913)

Light-foot \Light"-foot`\ (-f[oo^]t`), Light-footed
\Light"-foot`ed\, a.
   Having a light, springy step; nimble in running or dancing;
   active; as, light-foot Iris. --Tennyson.

Source : WordNet®

light-footed
     adj : (of movement) having a light and springy step; "a
           light-footed girl" [ant: {heavy-footed}]