olive

Definition:

The olive is the small, oval fruit from an olive tree, which is mostly grown in the regions surrounding the Mediterranean Sea.

Olive trees are a type of large evergreen shrub with tiny white flowers. They grow best in hot weather and can survive well with little water.
The olive tree's fruit starts out green and changes to black as they ripen. Olives were useful for food and for the oil that could be extracted from them.
Olive oil was used for cooking in lamps and for religious ceremonies.
In the Bible, olive trees and branches are sometimes used figuratively to refer to people.