Moniker

Unknown, first attested 1849. Suggested derivations are:

Backslang for ekename (compare nickname);
From Shelta munik;
From monk;
Partridge (A Dictionary of Historical Slang) suggests a corruption of monogram, which is suggestive of the sense signature.

Full definition of moniker

(plural monikers)

A personal name or nickname; an informal label, often drawing attention to a particular attribute.The rookie policewoman was upset being called Lemon Drop until she realized that everyone on the police force has a moniker.

2000, Jim Phelan, Irish Writing in the 1940s, David Pierce (editor), Irish Writing in the Twentieth Century: A Reader, page 541,Again fairly common, and always amusing, are the monikers drawn from the (imagined) childhood of a particular vagrant.
2010, Linda S. Miller, KÃ¤ren M. Hess, Christine M. H. Orthmann, 6th Edition, Community Policing: Partnerships for Problem Solving, page 388,A gang member may receive a new identity by taking on a nickname, or moniker, which others in the gang world would recognize. Monikers affirm a youth's commitment to gang life and may become their sole identity, the only way they see thselves and the only name they go by.
2010, Neal K. Devaraj, Ralph Weissleder, 30: "Click Chemistry": Applications to Molecular Imaging, Ralph Weissleder, Brian D. Ross, Alnawaz Rehemtulla, Sanjiv Sam (editors), Molecular Imaging, Principles and Practice, page 471,Recently, a class of reactions has gained tremendous attention in the chemistry community under the moniker of "click chemistry," a concept introduced by Kolb and colleagues.
2012, Richard Worth, Baseball Team Names, unnumbered page,Actually, the various monikers Pilgrims, Puritans, Plymouth Rocks, Red Stockings, Hubs and Hubites were frequently used, informally, for both Boston big league clubs until 1912.

2007, Barry L. Beyerstein, Chapter 16: Graphologyâ€”a total write-off, Sergio Della Sala (editor), Tall Tales About the Mind and Brain: Separating Fact from Fiction, page 255,The monikers of both these famously well-endowed movie stars contain enormous sworls (two of them, no less, for Ms West!) that could only signify you-know-what, according to Ms Koren.

(computing) An object (structured item of data) used to associate the name of an object with its location.

1998, Don Box, Essential COM, page 131,Monikers are often composed from other monikers to allow object hierarchies to be navigated based on a textual description of a path.
1999, Tim Hill, Windows 2000: Windows Script Host, page 186,The GetObject function can also be used to access objects via monikers. A moniker is itself an object that acts as an intermediary between VBScript and the actual object to be accessed. Monikers are typically used when the objects to be accessed exist in a namespace other than the file system.
2011, Thuan L. Thai, Learning DCOM, O'Reilly, page 121,There are different types of monikers, but the one that deals with object instantiation is the class moniker. A class moniker portrays a class factory.

(personal name or nickname) byname, nickname, pseudonym, sobriquet, street name
(signature) tag