Stag (noun)

1. An adult male deer, especially one that has grown its antlers.
2. An adult male horse that has not been castrated.
3. A man who attends a social event without a female partner.

Origin:

Originated from old english word "stagga" meaning adult male deer, it refers to an adult male deer or a horse.

Examples:

1. The stag was majestic with its large antlers.
2. The hunters were searching for a stag to shoot.
3. He was proud to own a beautiful stag horse.
4. The stag party was a night out with the boys.
5. He was the only stag at the wedding.