Definition of lead noun from the Oxford Advanced American Dictionary

     

    lead2

     noun
    noun
    NAmE//lɛd//
     
    see also lead1
     
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  1. 1[uncountable] (symbol Pb) a chemical element. Lead is a heavy, soft, gray metal, used especially in the past for water pipes or to cover roofs.
  2. 2[countable, uncountable] the thin black part of a pencil that marks paper
  3. Idioms
    go over like a lead balloon(informal)
     
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    to be very unsuccessful; to not be accepted by people My suggestion went over like a lead balloon.
See the Oxford Advanced Learner's Dictionary entry: lead