Nickname

v. give a name; give an affectionate name; give a shortened name

n. name of affection; shortened name; alias; name invented for oneself and used on IRC (Internet)

A nickname is a name of a person or thing other than its proper name. It may either substitute or be added to the proper name. It may be a familiar or truncated form of the proper name, such as Bob, Bobby, Rob, Robbie, Robin, and Bert for Robert. The term hypocoristic or "pet name" is used to refer to a nickname of affection between those in love or with a close emotional bond, compared with a term of endearment. The term diminutive name refers to nicknames that convey smallness of the names, e.g., referring to children. The distinction between the two is often blurred.
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Noun
1. 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"
(synonym) moniker, cognomen, sobriquet, soubriquet
(hypernym) appellation, denomination, designation, appellative
(derivation) dub
2. a descriptive name for a place or thing; "the nickname for the U.S. Constitution is `Old Ironsides'"
(hypernym) name
Verb
1. give a nickname to
(synonym) dub
(hypernym) name, call
(derivation) moniker, cognomen, sobriquet, soubriquet

(v. t.)
To give a nickname to; to call by a nickname.
  

(n.)
A name given in contempt, derision, or sportive familiarity; a familiar or an opprobrious appellation.
  

Two short separate words which may be formally or informally assigned by any appropriate authority to an event, project, activity, place name, topographical feature, or item of equipment for convenience of reference but not for the security of information. 1/7/80

Combinaison de deux mots brefs distincts que peut, à titre officiel ou non, attribuer n'importe quelle autorité compétente, dans un but de commodité ou de référence mais non de protection de l'information, à un événement, un projet, une activité, un lieu, un accident topographique ou un équipement. 1/7/80