A woman who has an attractive body but less attractive facial features.(noun)
A person with mushy, unattractive facial features.(noun)
The face of an unattractive person.(noun)
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Use "butterface" in a sentence
"They have an uncanny eye for the smallest defect figure-wise, and can spot unwanted hair from fifty paces - but a sufficiently thin, waxed, tanned and silicon-enhanced 'butterface' will sail under their oh-so-picky radar as a 'drop dead babe.'"
"No. At the center of the "but her face" (or more colloquially "butterface" or "buttaface", as you opted to use) paradigm is the idea that the referenced individual is attractive in all respected "but her face"."
"April and Mondo both pick the Brooklyn Bridge, as the Manhattan Bridge looks on trying not to feel like a total butterface."