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

     

    tar

     noun
    noun
    BrE BrE//tɑː(r)//
     
    ; NAmE NAmE//tɑːr//
     
    [uncountable] Features of roads
     
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  1. 1a thick black sticky liquid that becomes hard when cold. Tar is obtained from coal and is used especially in making roads. See related entries: Features of roads
  2. 2a substance similar to tar that is formed by burning tobacco low-tar cigarettes the average tar yield of British cigarettes
  3. Word Origin Old English teru, teoru, of Germanic origin; related to Dutch teer, German Teer, and perhaps ultimately to tree.Idioms
    spoil the ship for a ha’p’orth/ha’pennyworth of tar
     
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    (saying) to spoil something good because you did not spend enough money or time on a small but essential part of it
See the Oxford Advanced American Dictionary entry: tar