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English definition of “sucker”

sucker

noun (STICKING DEVICE)    /ˈsʌk.ər/ US  //
[C] something that helps an animal or object to stick to a surface : The leech has a sucker at each end of its body .The legs and feet of non-human animalsThe head and neck of non-human animals informal for suction cupTools in general
(Definition of sucker noun (STICKING DEVICE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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