Definition of tin noun from the Oxford Advanced American Dictionary

      

    tin

     noun
    noun
    NAmE//tɪn//
     
     
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  1. 1[uncountable] (symbol Sn) a chemical element. Tin is a soft silver-white metal that is often mixed with other metals or used to cover them to prevent them from rusting a tin mine a tin box
  2. 2[countable] a metal container with a lid used for keeping food in a cake/cookie tin
  3. Idioms
    like a cat on a hot tin roof
     
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    very nervous She was like a cat on a hot tin roof before her driving test.
See the Oxford Advanced Learner's Dictionary entry: tin