Ni·lot·ic 
(n
ī-l
ŏt
ĭk)
adj.1. Of or relating to the Nile or the Nile Valley.
2. Of or relating to the peoples who speak Nilotic languages.
n. A large group of Nilo-Saharan languages, spoken in South Sudan, Uganda, Kenya, and northern Tanzania and including Masai.
[Latin Nīlōticus, from Nīlōtis, from Greek Neilōtis, from Neilos, Nile.]