Proto-IE: *kurn-
Meaning: bastard
Old Indian: kuṇḍa- m. `an adulterine, son of a woman by another man than her husband while the husband is alive'
Old Greek: kǘrno-s (Maced., Phot.) 'bastard', cf. Hsch.
Russ. meaning: незаконнорожденный
References: WP I 467