What is the true meaning of noob?

rache is da biggest noob in the world mwahhahahahahahhahaha INDULGENCE 1 X O INDY O X GRATE FULL NOOOB!$!@$@$%$!$!$!$ mWAHAHHAHAHAHAHAHAHAHAHHAHAHAHAHA