The Proto-Indo-European word *keu(hₓ)-
Word *keu(hₓ)-
Meaning curve
See also Proto-Indo-European: *kéuhₓl̥ ‘hernia’
Synonyms *ank-2, ang-, *geu-~gehₓu-, *keu-k-, *(s)kamb-

Comments
Mallory J.P. and Adams D. (2006)