Usar
Usar, aris, m. , fleuve de la Mauritanie : Plin. 5, 21.
USAR
USAR the most easterly river of Mauretania. (Plin. Nat. 5.2. s. 1.) It seems to be the river called Σίσαρ by Ptolemy (Ptol. 4.2.10),and is probably the Ajebby, which falls into the gulf of Bugie.
[T.H.D]