Definition of top-up noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈtɒp ʌp//
    ; NAmE NAmE//ˈtɑːp ʌp//
    (British English)
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  1. 1a payment that you make to increase the amount of money, etc. to the level that is needed a phone top-up (= to buy more time for calls) Students will have to pay top-up fees (= fees that are above the basic level).
  2. 2(informal) an amount of a drink that you add to a cup or glass in order to fill it again Can I give anyone a top-up?

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