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)苗字
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)通称