The term 'BET MIDDLER' refers to a person who is involved in the gambling industry. A bookie (6 letters) is someone who takes bets on sporting events and other forms of gambling. A CROUPIER (8 letters) is a person who works in a casino, typically at a gaming table, and is responsible for dealing cards or managing the game. A BOOKMAKER (9 letters) is someone who sets the odds for betting on sporting events and other forms of gambling. All three of these roles are part of the gambling industry and are collectively referred to as 'BET MIDDLERS'.