The term 'Boston Bowler's Target' refers to the game of candlepin bowling, which is a variation of the traditional game of bowling that is popular in the northeastern United States. Candlepin bowling is played with smaller balls and pins, and the goal is to knock down as many pins as possible with each roll of the ball. The pins are set up in a triangular formation, and the player must hit the pins in the center of the triangle in order to score points.