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top up

verb

Definition of top up

  • transitive verb
  • British

    1. :  to make up to the full quantity, capacity, or amount

    2. intransitive verb
    3. British :  to replenish a supply

    top–up

    play \ˈtäp-ˌəp\ noun British


    1937

    First Known Use of top up

    1937


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