The Proto-Turkic word *japɨĺ-gak
Word *japɨĺ-gak
Meaning small louse, nit, gad-fly, leech
Synonyms *sirke, *čɨ̅pɨn

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