Top Definition
One who chews on the ends of straws, and may even go as far as to flip the straw over for more chewing possibilities. May be a form of releasing tension such as nail biting, but much more annoying.
Hey man, she is a total straw grinder! You no what else she'll be grinding! You know what I'm sayin'?!
by BigD2375 November 10, 2007
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