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1. Butter Bar
November 11, 2005 Urban Word of the Day
Military slang for Ensign or Second Lieutenant, who wear a Golden Bar as their rank insignia.
Who's the new butter bar in charge?
2. Butter Bar
Someone a bit pudgy...

And/or reason someone is a bit pudgy.
Oh, she's got a nice smile and everything, but she spends too much time at the Butter Bar.
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