κᾰσίγνητ-ος,ὁ, (κάσις, γενέσθαι, cf.γνήσιος)
A. brother, Od. 8.585 , IG 9(1).867.6 (Corc., prob.vi B.C.), etc.; esp. of thoseborn from the same mother, κ. καὶ ὄπατρον
Il. 11.257
: later as fem.,sister,τώδε τὼ κασιγνήτωthese twosisters, S. El. 977 , cf. Ps.- Luc. Philopatr. 11 : in more general sense,cousin, κ. τε ἔται τε
Il. 16.456
, cf. 15.545 : Astrol.,Gemini, Doroth. ap. Heph.Astr. 3.36 .
II. asAdj.,κασίγνητος,η,ον ,brotherly, sisterly, κασίγνητον κάρα
S. Ant. 899
, 915 , El. 1164 , dub. l. in E. Or. 294 ;κασιγνήτοιο φόνοιοabrother'smurder, Il. 9.567 . (Mostly poet.; also Aeol. , Sapph. Supp. 1.2 (prob.), IG 12(2).526d19 (Eresus), and Cypr.,Inscr.Cypr. 135.3 H. (Idalion): Thess.κατίγνειτος
IG 9(2).894 (Larissa).)