Top Definition
a person who is a habitual heavy drug user but can financialy support themself , does not steal from friends and family , can have large amounts of drugs and not use it all or kill themself but still has a very large drug addiction problem. Many top Drug dealers are tier one addicts .
Rick is fucked up all week on coke but still pays his bills , is a man of his word and never stole a dime from anyone hes a real tier one addict ......
by Dr Galoush July 21, 2012

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