1. [noun] a familiar name for a person (often a shortened version of a person's given name); "Joe's mother would not use his nickname and always called him Joseph"; "Henry's nickname was Slim"
    Synonyms: nickname, moniker, sobriquet, soubriquet

  2. [noun] the name used to identify the members of a family (as distinguished from each member's given name)
    Synonyms: surname, family name, last name


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