From Common Kypchak mïyïq, from Proto-Turkic *bïdïk (“moustache”).
Cognate with Bashkir мыйыҡ (mıyıq), Kazakh миық (miyq), Kyrgyz мыйык (mıyık), Azerbaijani bığ, Turkish bıyık (“moustache”), etc.
мыек • (mıyek)