nickname

noun
UK /ˈnɪkneɪm/
US /ˈnɪkneɪm/

A nickname is a short or funny name that people call you instead of your real name.

My friends call me Sunny, and that's my nickname.


OTHER MEANINGS

2. A familiar or shortened form of a person's proper name.

Bill is a common nickname for William.

3. A descriptive name given to a place, thing, or group.

New York City's nickname is the Big Apple.

4. To give someone or something a nickname.

The team nicknamed him Speedy because he ran so fast.