ἀδελφός
ἀδελφός
a_copul, δελφύς; cf. Lat. couterinus
ἀδελφοί are properly sons of the same mother:
as Subst., ἀδελφός, ὁ, voc. ἄδελφε (not -φέ), Ionic ἀδελφεός, Epic -ειός:—a brother, or generally, a near kinsman, ἀδελφοί brother and sister, like Lat. fratres, Eur.; ἀδελφεοὶ ἀπʼ ἀμφοτέρων brothers by both parents, i. e. not half-brothers, Hdt.
a brother (as a fellow Christian), NTest.
adj., ἀδελφός, ή, όν, brotherly or sisterly, Trag., Plat.
like Lat. geminus, gemellus, of anything in pairs, twin, Xen.:—then, just like, c. gen. or dat., ἀδελφὰ τῶνδε, ἀδελφὰ τούτοισι Soph.