Real Dictionary

olive
variable noun: An olive or an olive tree is a tree on which olives grow.
variable noun: Olives are small green or black fruit with a bitter taste. Olives are often pressed to make olive oil.

Olive in American English
a feminine name: var. Olivia
an evergreen tree (Olea europaea) of the olive family, native to S Europe and the Near East, with leathery leaves, yellow flowers, and an edible fruit
of the olive
adjective: of, pertaining to, or made of olives, their foliage, or their fruit
noun: a female given name
noun: an evergreen tree, Olea europaea, of Mediterranean and other warm regions, cultivated chiefly for its fruit

olive in British English
adjective: of, relating to, or made of the olive tree, its wood, or its fruit
noun: an evergreen oleaceous tree, Olea europaea, of the Mediterranean region but cultivated elsewhere, having white fragrant flowers, and edible shiny black fruits

olive in Hospitality
noun: Olives are small green or black fruits with a bitter taste. Olives are often pressed to make olive oil.