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slicence - such as slice licence or licence to slice, a word used by gangsters, to show respect to other members or to spread good words about them.
guy 1: "don't mess with him bruv he's got a slicence

guy 2: "what's that?"

guy 1: "it means he'll slice you if you don't shut up"
by YTPEXPERT July 25, 2010
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