The term 'Basketball Arbiter' is a job title for someone who officiates a basketball game. This person is commonly referred to as a REFEREE, which is a 7 letter word that can be found in the crossword solution. The 3 letter word REF is also a solution and is an abbreviation for REFEREE. A REFEREE is responsible for enforcing the rules of the game, making sure the players are playing fairly, and making calls on fouls and violations. They also have the authority to eject players from the game if necessary.