Ni·lot·ic 
(nī-lŏtĭk)
(nī-lŏtĭk)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.]