General English

  • noun a short or informal name given to someone
  • verb to give a nickname to someone


  • An alternate name utilized to identify oneself, another individual, a group, or an entity. Used, for instance, to identify oneself when utilizing an instant messaging service, or to identify an email addressee.

Information & Library Science

  • noun an alphabetical list of frequently used names on e-mail, giving the corresponding full and official names and easy access to addresses


  • noun a name (often humorous), which is given to or used by a person instead of his or her real name