highroller

noun
UK /ˈhaɪˌrəʊlə/
US /ˈhaɪˌroʊlər/

A highroller is a person who spends or bets a lot of money.

The casino gave the highroller a free suite and a fancy dinner.


OTHER MEANINGS

2. A person who takes big risks in business or gambling.

He was a highroller who put his whole savings into one startup.

3. A wealthy and flashy person who shows off expensive things.

The highroller arrived in a gold sports car.

4. A player who makes large bets at a table game.

The highroller raised the stakes until everyone else folded.