Alias \A"li*as\, n.; pl. Aliases. [L., otherwise, at another time.] (Law) (a) A second or further writ which is issued after a first writ has expired without effect. (b) Another name; an assumed name.

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A pseudonym is a fictitious name used by a person, or sometimes, a group.

Pseudonyms are often used to hide an individual's real identity, as with writers' pen names, graffiti artists' tags, resistance fighters' or terrorists' noms de guerre, and computer hackers' handles. Actors, musicians, and other performers sometimes use stage names, for example, to mask their ethnic backgrounds. Stage names are also used as something that better matches their stage personae, as in the case of hip hop artists such as Ol' Dirty Bastard (who was known under at least six aliases); black metal performers such as Nocturno Culto; and hardcore punk singers such as "Rat" of Discharge. Employers sometimes require employees to use assigned names to help sell products.

In some cases, pseudonyms are adopted because they are part of a cultural or organizational tradition. This has been the case of devotional names used by members of some religious orders, and "cadre names" used by Communist party leaders such as Trotsky and Stalin.

• Woman With 12 Aliases Wanted For Allegedly Stealing Boys Clothing - WBNS 10TV Columbus
  Investigators said on Tuesday that they were searching for a woman who has two Social Security numbers, 12 aliases and more than 26 arrests on her record. According to Columbus City Attorney's Office, Judith Garrison failed to appear in court on ... Read more on this news related to 'Aliases'
• Arrests Made At Escondido DUI Checkpoint - San Diego Channel
  ESCONDIDO, Calif. -- Four suspected drunken drivers were arrested at a checkpoint in Escondido that wrapped up early Sunday, along with a probation violator and a woman with prior felony arrests and 11 aliases who was arrested for possession of ... Read more on this news related to 'Aliases'
• Author claims huge coverup in Zodiac Killer investigation - Los Angeles Times
  Lafferty claims the killer is now a 91-year-old man living in Solano County. The book uses aliases and does not identify the alleged killer by name. Lafferty claims he and other lawmen investigated the suspect in the early 1970s but were stymied ... Read more on this news related to 'Aliases'