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brush up

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phrasal verb [intransitive/transitive]
Word Forms
present tense
I/you/we/theybrush up
he/she/itbrushes up
present participlebrushing up
past tensebrushed up
past participlebrushed up
  1. to practise and improve your skills or knowledge of something

    I took a class to brush up my German before the trip.

    brush up on:

    the opportunity to brush up on various techniques

See also main entry: brush

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Open Dictionary

selfie stick

an expandable stick which you attach to a mobile phone or camera to help you take a selfie …

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