Bone up

verb, slang

Definitions

Verb
  1. 1
    To study or cram, especially in order to refresh one's knowledge of a topic. intransitive, slang

    "Information acquired in that way, makes an impression ; this "boning" up for an examination is all right as a finishing touch, but it will not last."

  2. 2
    study intensively, as before an exam wordnet

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