When you have a crush on a person's brain, with complete disregard to appearance, availability, etc.
Laura has a braincrush on Thomas Jefferson.
作者 awesomeaardvark 2009年10月21日
Top Definition
wanting someone purely for their mind - has nothing to do with sexual attraction.
"i have such a brain crush on this kid in my philoshophy class. sure hes 5'3" and clearly never combs his hair, but he is so witty and articulate."
作者 woundedgazelle 2005年12月12日



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