card index

Definitions of card index
  1. noun
    an alphabetical listing of items (e.g., books in a library) with a separate card for each item
    synonyms: card catalog, card catalogue
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    (trademark) a desktop rotary card index with removable cards; usually used for names, addresses, and telephone numbers
    type of:
    file, file cabinet, filing cabinet
    office furniture consisting of a container for keeping papers in order
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