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1.
A small amount of money that literally means nothing to the person using the term. Regardless of how much money the person is talking about, 'ashtray money' is used to define an infinitesimally small portion of their total wealth.
"7 grand! That's my fuckin' ashtray money bro!" - Lenny Dykstra
by Kitten Wrangler October 15, 2010