1) A bag containing cows.
2) An extension of the term 'cow' used by girls to insults other, perhaps sluttier (or prettier) girls. A general term for insulting other females.
Maz: I saw Bella flirting with Rick the other day!
Flo: That cowbag! How dare she flirt with the boy!
by Maz+Flo September 1, 2005
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A cowboy that is also a douchebag.
I went out with Luke last night. His butt looks great in his wranglers, but boy is he a cowbag!!
by mougley December 2, 2010
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A moody person, typically an old woman. 'old cow' 'old bag'. A person who is a bag of attitude and grouchy
by CopperKal December 15, 2022
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