Proto-IE: *keut-
Meaning: cunnus, anus, scrotum
Old Indian: cuta-, cūta- m., cuti-, cūti- f. `anus' (L.)
Old Greek: küsó-s `vulva; ānus' (Hsch.); kǘssaro-s `ānus' (~ -ǖ-)
Celtic: Cymr cwd `Hodensack'
Russ. meaning: всякий Scham
References: WP II 546 f