refresher

definition: a course that reviews and updates a topic for those who have not kept abreast of developments
example:
speech part: noun
synonyms: refresher course
definition: a drink that refreshes
example: I stopped at the bar for a quick refresher.
speech part: noun
synonyms:
definition: a fee (in addition to that marked on the brief) paid to counsel in a case that lasts more than one day
example:
speech part: noun
synonyms:

How refresher is being used?