noun

1. An additional name, particularly those derived from a birthplace, quality, or achievement; an epithet.

2. An additional name given to a person, place, or thing; a byname or nickname.

3. The name a person shares with other members of that person's family, distinguished from that person's given name or names; a family name.

Synonyms: byname, nickname, sobriquet, epithet, family name, last name, to-name

verb

1. To give a surname to.

2. To call by a surname.