What is "monickers"

Usage examples of "monickers".

He wasn't especially good at matching faces and monickers, and needed a while to remember that the gray-haired woman was Marie and the bleached blonde Sal, that the fellow with the red beard was Gordon and the man with the red face Rodney.

He wasn’t especially good at matching faces and monickers, and needed a while to remember that the gray-haired woman was Marie and the bleached blonde Sal, that the fellow with the red beard was Gordon and the man with the red face Rodney.

Hackers themselves often adopt romantic and highly suspicious tough-guy monickers like "Necron 99," "Prime Suspect," "Erik Bloodaxe," "Malefactor" and "Phase Jitter.