The Proto-Turkic word *kadɨr-
Word *kadɨr-
Meaning to twist, turn, bend
Synonyms *bük, *kɨjĺ-, *bur(a)-, *čebir-, *dolga-

Comments
S. A. Starostin, A. V. Dybo, O. A. Mudrak - An Etymological Dictionary of Altaic Languages, 2003, Brill

Other words that might be of interest
*eg- ‘to bend’, *kaŋïr ‘to bend’