雀頭
also: ジャントウ
Meanings
1
In mahjong, the pair (雀頭) is one of the required components of a winning hand, alongside four melds. Also called 対子 (トイツ).
from Chinese
See also: 対子
To win in mahjong, you need four melds and one pair.
This hand is not ready yet because it lacks a pair.