Baretti: A dictionary of the English and Italian languages
Tacére, v. n. (pass. tac-qui, -que, -quero,)
1. to be silent, to hold one's tongue, to keep silence;2. to be still, quiet, noiseless. Tacete, hold your tongue. Chi tace consente, silence gives consent. Là dove il sol tace, where the sun (is silent) never shines; v. a. to conceal, pass over in silence. — una cosa, to conceal a thing, pass it over in silence. Fateli —, make them hold their tongue.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
tacere: to be silent, still, or mum, to hold ones peace, to be whoosh, to say nothing, to make no noise. Also to conceale, or be secret.