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English definition of “tag”

tag

noun (MARK)    /tæɡ/
[C] a type of graffiti (= words and pictures drawn in public places on walls, etc.) that shows who has drawn it and that represents a signature : The tag is the most commonly seen graffiti in any urban setting.
(Definition of tag noun (MARK) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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