Definition of round off phrasal verb from the Oxford Advanced American Dictionary

 

round off

 phrasal verb
phrasal verb
 
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Phrasal Verbs

    round somethingoff (with something)

     
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  1. 1 (also round somethingout) to finish an activity or complete something in a good or suitable way She rounded off the tour with a concert at Carnegie Hall.
  2. 2to take the sharp or rough edges off something You can round off the corners with sandpaper.
See the Oxford Advanced Learner's Dictionary entry: round off