surname

1 a name shared by members of a family <judging from your surname, I'd guess that your family is Italian> Synonyms family name, last name Related Words maiden name, married name; cognomen, epithet, sobriquet (also soubriquet)

2 a descriptive or familiar name given instead of or in addition to the one belonging to an individual <“da Vinci” was Leonardo's surname but not his family name, Vinci being the town near Florence where the great artist was born> Synonyms alias, byname, cognomen, epithet, handle, moniker (also monicker), sobriquet (also soubriquet), nicknameRelated Words appellation, denomination, denotation, designation, label, tag, title; anonym, nom de guerre, nom de plume, pen name, pseudonym