noun / adjective
pistachio
pih-STASH-ee-oh/pɪˈstæʃiəʊ/
An edible greenish seed enclosed in a hard shell.
The pistachio's split shell exposes the green kernel inside.

Etymology
Greek pistakion named the nut and came from pistakē, the pistachio tree. The English meaning preserves this connection between the edible seed and the tree that bears it.
In context
the ground nut paste pistachio powder brings out more pistachio flavor
More examples
- Sprinkle chopped pistachios over the salad.
- This pistachio ice cream contains bits of real nuts.
- One pistachio in the bag has a completely closed shell.
Forms
pistachio · pistachios