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1.
The aimless pursuit of thrills.
Dude, on Fridays I just kinda gallivant around the office all day.
by Mack C February 22, 2007
 
2.
To go out in search of someone to flirt with, hook up with, etc.
My boyfriend told me not to go out galivanting while he was away in NYC.
by Mellarky May 11, 2004