What is "kimbundu"

Kimbundu, or North Mbundu, one of two Bantu languages called Mbundu (see Umbundu), is the second-most-widely spoken Bantu language in Angola. It is concentrated in the north-west of the country, notably in the Luanda Province, the Bengo Province, the Malanje Province and the Cuanza Norte Province. It is spoken by the Ambundu.