To many poker players and fans of the sport, the term "pro" simply means top player in the field. Depending on the level of competition in any event I am playing at, I have experienced both sides of this example of the definition: where I am looked upon as the pro at the table and where I am sitting amongst pros.
Yes, you can play online slots for real money at licensed casinos in states with legal online casino gambling. These sites offer a wide range of options where players can bet and win real money. These winnings can then be withdrawn from the casino through various banking methods.
Nevada online gambling is perfectly legal. The state has hundreds of legal sportsbooks for gamblers to choose from, while online poker is also legal and thriving in Nevada. Nevada online casinos, however, are still not licensed or regulated.