What does Boxing Day have to do with boxing?
1800, from Hindi pachisi, from pachis "twenty-five" (highest throw of the dice), from Sanskrit panca "five" (see five) + vinsati-s "twenty." Modern spelling outside India, with intrusive -r-, was enshrined 1892 by trademark name.
board game, sometimes called the national game of India. Four players in opposing partnerships of two attempt to move pieces around a cross-shaped track. Moves are determined by throws of cowrie shells or dice. Each player has four pieces, which begin at the centre space, move down the middle track nearest the player, and counterclockwise around the outer track of the board. The partnership whose pieces first complete the course by returning to the centre space is the winner