Definitions
There are 2 meanings of the phrase
High Roller.
High Roller - as a noun
One who spends lavishly and ostentatiously on entertainment
Example: "The last of the big spenders"
Synonyms (Exact Relations)
A gambler who wagers large sums
Example Sentences
"The high roller spent thousands of dollars at the casino."
"The high roller arrived in a flashy sports car."
"The high roller always stays in the penthouse suite."
"The high roller is known for his extravagant lifestyle."
"The high roller won a massive jackpot at the slot machines."