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1. butterbutt
The Butterbutt, or, more properly, the Yellow-rumped Warbler (Dendroica coronata) is one of the most common warblers in North America. In summers, males have streaked backs of black on slate blue, white wing patches, a streaked breast, and conspicuous yellow patches on the crown, flank, and rump.
I saw a butterbutt flitting around in the tree outside my window
2. butterbutt
a woman who is very attractive, except she has a large or unattractive butt.
Oh man, that chick is so hot. Oh wait, nevermind, she's a butterbutt.

Man, she looks hot... but her BUTT.
by Alex Sep 28, 2004 add a video
3. Butterbutt
A female with whom you can place an ear of corn between her buttcheeks in order to butter it.
Look at Spanky's butterbutt.....that would come in handy at the family picnic
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