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English definition of “dummy”

dummy

noun [C] (NOT REAL)    /ˈdʌm.i/
something that is not real and is used for practice or to deceive : The device is not a real bomb but a dummy.True, real, false, and unrealUnreal things and unreality in some sports , especially football , an act of pretending to kick or hit the ball in a particular direction , in order to deceive the other players Faking and pretending
(Definition of dummy noun (NOT REAL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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