This Slang page is designed to explain what the meaning of newbie is. The slang word / phrase / acronym newbie means . Online Slang Dictionary. A list of. Noob, newb or newbie is a slang term for a novice or newcomer, or somebody inexperienced in of the s and means a neophyte in a place or situation; alternatively, it may derive from the Among alternative forms are newby, nubie, and "newbee" (e.g. Los Angeles Times of August "It had to do with newbees. Looking for the definition of NEWBIE? Learn what NEWBIE means at play9ballpoolonline.win, the ultimate internet slang resource.