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• n  a familiar name for a person (often a shortened version of a person's given name)
• n  the name used to identify the members of a family (as distinguished from each member's given name)

• Her nickname is "Baby Doll", a cognomen she does her best to live up to by lying in a crib-like bed and sucking her thumb.
• One year later, he began billing himself as Hal Taliaferro, and under this cognomen played a wide range of characterizations, from serial lead (The Lone Ranger 1939) to kindly .
• Though the title Yesterday, Today and Tomorrow has absolutely no relation to the film at hand, it is a far more appealing cognomen than the film's British release title, She Got .

• nickname
• moniker
• sobriquet
• soubriquet
• byname
• surname
• family name
• last name