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