Definition of sucker noun from the Oxford Advanced Learner's Dictionary

     

    sucker

     noun
    noun
    BrE BrE//ˈsʌkə(r)//
     
    ; NAmE NAmE//ˈsʌkər//
     
     
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  1. 1(informal) a person who is easily tricked or persuaded to do something
  2. 2sucker for somebody/something (informal) a person who cannot resist somebody/something or likes somebody/something very much I've always been a sucker for men with green eyes.
  3. 3 a special organ on the body of some animals that enables them to stick to a surface
  4. 4a disc shaped like a cup, usually made of rubber or plastic, that sticks to a surface when you press it against it
  5. 5 a part of a tree or bush that grows from the roots rather than from the main stem or the branches and can form a new tree or bush
  6. 6(North American English, slang) used to refer in a general way to a person or thing, especially for emphasis The pilot said, ‘I don't know how I got the sucker down safely.’
  7. 7(North American English, informal) = lollipop
See the Oxford Advanced American Dictionary entry: sucker