What is the definition of n-dubz?

Answer 1

N-Dubz was a British hip hop group formed in London in 2000. The group consisted of members Dappy, Tulisa, and Fazer, and they gained popularity in the late 2000s and early 2010s. N-Dubz was known for their urban music style, incorporating elements of hip hop, R&B, and grime.

Answer 2

It's a name of a band and the N comes from North as in North London which is the area of London that they are from.