bone up

present singular third person bones up · participle present boning up · participle past boned up · past boned up

1. intransitiveslangTo study or cram, especially in order to refresh one's knowledge of a topic.

   Now is the perfect time to bone up on your fashion history.

   2004 September 14, Kate Novack, “Fashion Literacy”, in Time

   2 more examples

   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.

   1913, William Christian Schmeisser, Are You Going To College?, page 132

   Here's your chance to bone up on the segregating, or crediting, or whatever you call it.

   1914, Kathleen Norris, chapter 2, in Saturday's Child

   Synonyms: brush up, review, revise, rub up