1 definition by afoxinsox

Someone who can get drunk or high off of incredibly small amounts of stuff. Usually a small person.
Dude! Sherry's passed out in the bathroom! Didn't she only have a quarter of a beer? Featherweight!!

Okay, Hannah, you better only have one hit. You're such a featherweight, last time you had two and you were stoned for days.
by afoxinsox May 7, 2010
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