Definition of sharp adverb from the Oxford Advanced American Dictionary

     

    sharp

     adverb
    adverb
    NAmE//ʃɑrp//
     
     
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    exactly
  1. 1used after an expression for a time of day to mean “exactly” Please be here at seven o'clock sharp.
  2. left/right
  3. 2 sharp left/right turning suddenly to the left or right
  4. music
  5. 3 (sharper) above the correct pitch (= how high or low a note sounds) opposite flat
See the Oxford Advanced Learner's Dictionary entry: sharp