nickname

/หˆnษชkneษชm/
noun
  1. 1

    A familiar, invented given name for a person or thing used instead of the actual name of the person or thing.

  2. 2

    A kind of byname that describes a person by a characteristic of that person.

verb
  1. 1

    To give a nickname to (a person or thing).

Source: https://en.wiktionary.org/wiki/nickname