九一
Meanings
1
hand of 9 and 1 in oicho-kabu
A specific scoring combination in the traditional Japanese card game oicho-kabu, where a 9 and a 1 together form a hand.
See also: おいちょかぶ
In oicho-kabu, when a 9 and a 1 come up, that hand is called 'kuppin'.