cognomen   (Sound)

The cognomen has 2 Senses.

• byname, sobriquet, moniker, nickname, soubriquet, cognomen
• 渾名, 仇名, ニックネーム, あだ名, 愛称, 綽名, 通称
• 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"
• 打ち解けた名前（しばしば人の名を短くしたもの）

• family name, cognomen, surname, last name
• 名字, 姓, 氏, 苗字
• the name used to identify the members of a family (as distinguished from each member's given name)
• 家族の構成員を同定するために使われる名前（それぞれの構成員の名と区別されたものとして）