This week, for instance, Starbucks announced hundreds of store closings despite the brand brushup.
From the businessweek.com
What Williams'tutelage comes down to is a brushup on the basics, a touch of inspiration and lots of positive thinking.
From the time.com
His vast memory allowed him to store hundreds of pieces of music in his head, ready for performance on a moment's brushup.
From the time.com
More examples
Review: practice intended to polish performance or refresh the memory
A brush in the push direction. See also "brush", "brush-pass".
N. A shadowrun to collect background information.
A rehearsal occurring in the course of a run of performances, either as a refresher after a long gap or to work over problems that have been noted in performance. ...