Concise Bible Dictionary:
1. botnim. This is judged to be the fruit of the pistachio tree (Pistacia vera). These nuts were among the good things sent to Joseph by his father (Gen. 43:11).
Pistacia Vera
2. egoz. The bride “went down into the garden of nuts” (Song of Sol. 6:11). This word is considered to refer to the walnut tree (Juglans regia). Josephus and others speak of the walnut tree growing in Palestine.
Juglans Regia – Walnuts in their shells
Strong’s Dictionary of Hebrew Words:
Meaning:
from 990; (only in plural) a pistachio-nut (from its form)