A lauguage that means "peope of the coast"

Swahili

Explanation:

the swahilicoast located along the shores of East Africa ,was a region where, from the 8th century CE Africans and Arabs mixed to create a unique identity ,often referred to as the Swahili culture.Swahili , which is also the name of the people's language, is often referred to as the "Swahili coast".