Sibling (noun)

1. A brother or sister.
2. Someone who shares one or both parents with another person.

Origin:

Sibling first recorded in the late 17th century, it comes from the latin word "siblingem" meaning a brother or sister.

Examples:

1. He has two siblings, a sister and a brother.
2. She has no siblings.
3. He is the eldest sibling.
4. She is very close to her siblings.
5. The siblings inherited the property from their parents.