From Proto-Turkic *tumšuk. Cognates include Turkish tumşuk (“large beak”), Kazakh тұмсық (tūmsyq, “beak”), Uzbek tumshuq (“beak”), Uyghur تۇمشۇق (tumshuq, “beak”) and Yakut тумус (tumus, “beak”).
тумшук • (tumşuk) (Arabic spelling تۇمشۇق)