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a Twenty pound note, in british money
the picture on the reverse side of a £20 note is of a man named adam smith
Can refer to amounts eg marijuana
"how much u want?"
"just a smithy"
by SBEsummers February 10, 2008
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Dogging tha boiz. When someone ditches or lets down his mates for no reason.
"Hey are you coming to footy today?" "Nah im pullin a smithy".
by flaba jaba waba noonga February 24, 2011
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