noun, Philately.
a block of four or more U.S. stamps that includes, in the selvage of the sheet, the copyright mark of the U.S. Postal Service.


Read Also:

  • Copyright deposit library

    noun 1. one of six libraries legally entitled to receive a gratis copy of every book published in the United Kingdom: the British Library, Bodleian, Cambridge University, Trinity College in Dublin, Scottish National Library, and National Library of Wales

  • Copyright social conflict

    noun 1. another term for copyfight

  • Copytaker

    /ˈkɒpɪˌteɪkə/ noun 1. (esp in a newspaper office) a person employed to type reports as journalists dictate them over the telephone

  • Copy taster

    noun 1. a person who selects or approves text for publication, esp in a periodical

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