Definitions

1. noun

a name used to identify a person after marriage or as part of a family, typically inherited from one’s father or ancestors

“Her surname is Smith, and she’s very proud of her family heritage.”

2. verb

to give or assign a surname to someone, typically a child

“The new parents decided to surname their baby after her grandmother.”

3. verb

to call or address someone by their surname, especially in formal or official contexts

“The teacher asked the students to surname their classmates in alphabetical order.”