Top definition
the practice of not wearing underwear under one's outer clothing. also referred to as "going commando."
I'm so behind on laundry that I am going cowboy today.
by mem13 July 10, 2008
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2
To deliberately kill a number of random bystanders while performing a criminal or political assassination. It gets the message across that you really wanted the person

dead. The target was known to frequent a certain bar, so they went cowboy on the place and took him out.
The target was known to frequent a certain bar, so they killed him by going cowboy on the place.
by man with titties January 05, 2017
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