In Kalyan Matka, the term "Jodi" refers to a pair of digits that are drawn as part of the number selection process. Matka is a type of gambling or lottery game that originated in India and is based on the selection of numbers, usually from 0 to 9, in various combinations. In the Kalyan Matka game, players bet on various types of combinations, and a "Jodi" is one of the most popular bet types.