Gambler (noun)

A person who regularly engages in gambling.

Origin:

From the word "gamble" meaning to stake or risk money on the outcome of a game or event.

Examples:

1. He was a gambler and often played poker.
2. She was a professional gambler and made her living from gambling.
3. The gambler lost all his money at the casino.
4. The gambler's addiction caused him to lose everything he had.
5. The gambler was known for his high stakes and fearless attitude.