all terminals; winning hand of only 1s and 9s
A mahjong yaku where every set is a pung or kong of terminals (1s or 9s) plus a pair of terminals. Also called 清老頭 (チンロートー) or 'all terminals'.
from Chinese qīng lǎo tóu
Chinrōtō is one of the yakuman hands, where all sets must be pungs or kongs of terminals, and the pair must also be terminals.