the name that a person has in common with other family members, as distinguished from a Christian name or given name; family name.

a name added to a person's name, as one indicating a circumstance of birth or some characteristic or achievement; epithet.

to give a surname to; call by a surname.

noun

cognomen , last name , matronymic , metronymic , patronymic , agnomen , appellation , eponym , family name , patronym