A bingo-hall worker can be referred to as a bingo caller, bingo attendant, or bingo game operator. These synonyms depict individuals who are responsible for facilitating the playing process and ensuring that the game runs smoothly. The bingo caller announces the numbers or letters that are drawn from the hopper, while the attendant assists players with any questions or concerns they may have. The game operator manages the overall setup of the game, such as the bingo equipment and sale of tickets. All in all, these synonyms showcase the vital roles played by individuals in the bingo-hall sector to make the experience enjoyable and seamless for players.