Baretti: A dictionary of the English and Italian languages
Piég-a, s. f. dim. Piég-hétta, Piég-olína, aug. Piég-óna, Piég-óne,
1. plait or fold; 2. vileness, craftiness; 3. habit or custom. Le cose hanno preso una cattiva —, things go very bad. Ha preso una cattiva —, he has got or contracted a bad habit. Avere una cosa in —, to have a thing at one's disposition or command. Dar —, to resist, to withstand, to oppose. Essere in —,to begin to run away.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
piega: a folde, a plate, a bending, a bowing, a stopping, a yeelding, an enfolding. Also a wrinkling. Also wilinesse, doublenesse of minde, subtill craft.