Artificial intelligent assistant

book case

ˈbook ˈcase3
  A case or pair of boards covered with cloth or fancy paper, for binding a volume, or the periodical numbers or parts of a work; also a case for holding unbound serials, music, etc.

1885 C. Mackeson Brit. Alm. Comp. 94 In some parts of the country identical titles are very differently applied. Among the double meanings..[is] Book Case Maker for a Cabinet-maker or Bookbinder.

Oxford English Dictionary

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