1. (n.) The last of the three names of a person among the ancient Romans, denoting his house or family.

2. (n.) A surname.

affectionate name agnomen appellation appellative binomen binomial name byname byword cryptonym denomination designation diminutive empty title epithet eponym euonym family name handle honorific hypocoristic hyponym label last name maiden name married name matronymic moniker name namesake nickname nomen nomen nudum patronymic pet name praenomen proper name proper noun scientific name secret name sobriquet style surname tag tautonym title trinomen trinomial name