1. [adj]  moving easily and quickly; nimble; "the dancer was light and graceful"; "a lightsome buoyant step"; "walked with a light tripping step"
2. [adj]  characterized by a buoyant rhythm; "an easy lilting stride"; "the flute broke into a light lilting air"; "a swinging pace"; "a graceful swingy walk"; "a tripping singing measure"

Tripping
In this collection of 50 personal accounts, a group of people, both famous and unknown, relate their experiences of experimenting with LSD and other psychedelic drugs, explaining how drugs have permanently altered their perceptions of reality. Well-known contributors include John Perry Barlow of the Grateful Dead, science fiction writer Robert Charles Wilson, and poet Anne Waldman.

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1. \Trip"ping\, a.
   1. Quick; nimble; stepping lightly and quickly.
   2. (Her.) Having the right forefoot lifted, the others
      remaining on the ground, as if he were trotting; trippant;
      -- said of an animal, as a hart, buck, and the like, used
      as a bearing.
   

2. \Trip"ping\, n.
   1. Act of one who, or that which, trips.
   2. A light dance.
            Other trippings to be trod of lighter toes.
                                                  --Milton.
   3. (Naut.) The loosing of an anchor from the ground by means
      of its cable or buoy rope.
   {Tripping line} (Naut.), a small rope attached to the
      topgallant or royal yard, used to trip the yard, and in
      lowering it to the deck; also, a line used in letting go
      the anchor. --Luce.