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)
big spenderA 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."