1. (

• nickname ,
• moniker ,
• cognomen ,
• sobriquet ,
• soubriquet ,
• byname

) 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" ;

2. (

• surname ,
• family_name ,
• cognomen ,
• last_name

) the name used to identify the members of a family (as distinguished from each member's given name) ;