Top definition
An otherwise attractive woman who ruins it all by smoking - a reference to the carcinogens contained in cigarettes.
"I thought that she was hot until I saw her light up and realized she was a carcinojenny."

"The best thing about a carcinojenny is that she is guaranteed to have an oral fixation."

"The entrance to the club was crowded with carcinojennies smoking in the cold."
by Senor Cameltoe August 29, 2007
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