An overused label applied to an academically successful high school / university student. Has recently been broadened to include anyone who reads recreationally and has an average higher than 60%.
For example:
Jim: “Sally, you should die your hair blonde and stop acting intelligent. People might think you’re a browner.”
Sally: *Gasps in mock dismay*. I’ll get right on that, Jim.
the nickname derived from the surname "Brown". Normally reserved for the coolest of the Browns. People named "Browner" have large brains, huge cocks, and are so devastatingly charming that girls' underwear disintegrates due to the sheer brilliance of a Browner.