Uncle (noun)

1. The brother of one's parent.
2. A man who is a brother of one's father or mother.
3. An older male relative.

Origin:

Middle english: from old french oncle, from latin avunculus, from avus "grandfather".

Examples:

1. He visited his uncle in the hospital.
2. She has a close relationship with her uncle.
3. He is the uncle of the bride.
4. He is the uncle of the groom.
5. He is the uncle of the children.