A nonsense word. It allows you to call your friends names without being particularly offensive and causes them to wonder to the meaning.
Most commonly used throughout the 'school ground' setting, in which name-calling is an everyday part of life.
Is part of a list of many nonsense words commonly used to allow one person to seem superior, knowing an apparently uncommon offensive word.
He's a bit of a namdeep
Oi, you, namdeep!
Hey namdeep, what's wrong with your face?
Put some clothes on you namdeep!