Old Irish cos

← Proto-Celtic *koxsā (inherited)

← Welsh coes (cognate)

← Proto-Indo-European *koḱs- (inherited)

← Latin coxa (cognate)

→ Welsh coes (cognate)

→ Irish cos (inherited)

→ Scottish Gaelic cas (inherited)

→ Manx cass (inherited)

→ Latin coxa (mention)