Baretti: A dictionary of the English and Italian languages
Túra, s. f.
1. stoppage, the act of stopping, state of being stopped; 2. a little dam made by children in gutters; 3. coffer-dam.
Turá-re, v. a. to stop, shut, dam up. — un fiasco, to stop or cork a bottle. — le orecchie,to stop one's ears. — la bocca, to stop one's mouth; adj. Turá-nte.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
turare: to stop, to muffle, to dam vp, but properly any hole, gap, or mouth.