Baretti: A dictionary of the English and Italian languages
Piánt-a, s. f. dim. Piánt-erélla, Piánt-icélla, Piánt-ína,
1. a plant,2. shoot, bud, or sprig; 3. nephew, offspring, posterity; 4. the sole of the foot. Fermare le piante, to stop. Voltare le —, to turn back. Piantar le piante in un luogo, to set foot in a place; 5. plan, draught, model, ground-plot.— di leone, sanicle or setter grass.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
pianta: any kind of plant, set, roote or tree. Also the flat or sole of ones foote. Also the platforme or foundation of any frame or building. Also among Anatomists as Pédio.