Definition of teaspoon noun from the Oxford Advanced American Dictionary

     

    teaspoon

     noun
    noun
    NAmE//ˈtispun//
     
     
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  1. 1 a small spoon for putting sugar into tea and other drinks
  2. 2 (also teaspoonful
    NAmE//ˈtispunˌfʊl//
     
    )
    (abbreviation t., tsp.) a measurement in cooking, equal to one sixth of a fluid ounce or one third of a tablespoon Add two teaspoons of salt. a teaspoonful of sugar
See the Oxford Advanced Learner's Dictionary entry: teaspoon