A newcomer, someone new to something.
He was a newbie to chemistry.
A new user or participant; someone who is extremely new and inexperienced (to a game or activity). A beginner.
Anything recently introduced into a setting, especially something that replaces an older version.
If you find that you would prefer using the new printer most of the time, while using the original only when needed, you can make the newbie the default printer for your system.
Uncertain: perhaps an alteration of newie with intrusive b (compare freebie), possibly a blend of newborn + baby, or perhaps a shortening of new boy or new beginner.
Select a language to see translations