Source : Webster's Revised Unabridged Dictionary (1913)

Gallivant \Gal"li*vant\, v. i. [From {Gallant}.]
   To play the beau; to wait upon the ladies; also, to roam
   about for pleasure without any definite plan. [Slang]
   --Dickens.

Source : WordNet®

gallivant
     v : wander aimlessly in search of pleasure [syn: {gad}, {jazz
         around}]