'moniker' definitions:

Definition of 'moniker'

From: WordNet
noun
A familiar name for a person (often a shortened version of a person's given name); "Joe's mother would not use his nickname and always called him Joseph"; "Henry's nickname was Slim" [syn: nickname, moniker, cognomen, sobriquet, soubriquet, byname]

Definition of 'moniker'

From: GCIDE
  • monicker \monicker\, moniker \moniker\n. The name of a person, especially an alias or a nickname. [slang]
  • Syn: nickname, alias, sobriquet, cognomen. [PJC]

Synonyms of 'moniker'

From: Moby Thesaurus