Baretti: A dictionary of the English and Italian languages
Serbá-re, v. a.
1. to keep, preserve, conserve, defend, maintain; 2. to reserve, keep, put by.Serba questo per te stesso, keep this for yourself;3. to delay, put off to another time. Vivi, meschino, vivi serbati alla vendetta, live, poor wretch, live till you are revenged; 4. to take heed, to mind; s. m. Serbá-tóre, f. Serbá-tríce.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
serbare: to keepe, to reserue, to preserue. Also to obserue, to hold or maintaine, as Seruáre.