sōbrīnus , i, m., and sōbrīna , ae, f. contr. for sororinus from soror, and therefore prop. an appellation for the children of sisters; hence, in gen.,
I.a cousin-german, cousin by the mother's side, Fest. p. 297 Müll.; Dig. 38, 10, 3; Just. Inst. 3, 6.