con-sōbrīnus, i, m., and -a, ae, f. [soror].
I In a restricted sense, a designation of the children of two sisters, the child of a mother's sister; but more freq. consobrini is used of all cousins-german, the children of brothers or sisters; cf. Dig. 38, 10, 1, § 6; Isid. Orig. 9, 6, 14.—In the former sense, masc. , Cic. de Or. 2, 1, 2.—In the latter, masc. , Cic. Off. 1, 17, 54; id. Lig. 4, 11; cf. Dig. 38, 10, 10, § 15; fem. , Cic. Quint. 4, 16; Nep. Att. 2, 1.—
II In gen., a relation, cousin , in any degree, Suet. Calig. 26; id. Claud. 26.