Pistachio
[ˈpɪstəˌʃioʊ]Background Story
The sources checked record pistachio as the tree Pistacia vera and the seed it produces, not as a personal name.
Temperament

Related Names
Avo
An Estonian and Germanic masculine given name
Biscotti
English, from Italian biscotti, plural of biscotto, "cookie, biscuit"
Panuk
Pesto
Piccolo
Italian for 'small, little'; a nickname from piccolo
Pickles
An English surname
Piggles
Pino
Short form of names ending in -pino
Pitto
A short, affectionate term often used for a small dog