gamin
/ˈɡæmɪn/Definitions
1. noun
A young or inexperienced gambler, especially one who plays games of chance for money.
“The gamin at the casino was making a fortune by winning at roulette.”
2. noun
A person who is skilled in the art of gaming, especially one who plays games of skill for money.
“The gamin at the tournament was known for his exceptional video game skills.”