Any newcomer.
Used other than figuratively or idiomatically: see fresh, meat.
A person or group of people who arouse one's interest, either as a new target for deception, humiliation or ridicule, or as a potential love interest or one-night stand.
A newbie; someone who is new to a game, or has a new character.
That guy must be a newb at this game. He has no idea how to play.