Citrus (noun)

1. A fruit of a citrus tree, such as an orange, lemon, or lime.
2. A tropical or subtropical evergreen tree that bears such fruits, typically having fragrant white flowers and glossy leaves.

Origin:

Late 18th century: from latin citrus "citron tree", from greek kedros "cedar".

Examples:

1. She squeezed a citrus for juice.
2. The citrus trees were in full bloom.
3. The citrus orchards stretched as far as the eye could see.
4. The dish was garnished with a citrus.
5. The citrus industry is a major part of the state's economy.