mug up phrasal verb British English (
see also mug)
informal to try to learn something in a short time, especially for an examination
Synonym : swot upmug up on
Jeannie can’t come. She’s busy mugging up on science for her exam.mug something ↔ up
Mug up as much as you can about the country before your trip. [TahlilGaran] Dictionary of Contemporary English ▲