noun
two-pair wait; waiting on either of two pairs to complete a triplet
Mahjong term: a hand that is one tile away from winning, needing to complete either of two pairs into a three-of-a-kind (pon). Often used in the phrase シャンポン待ち.
from Chinese
See also: シャンポン待ち (シャンポンまち)
この手はシャンポン待ちで、どちらかの牌が来れば上がれる。
This hand is a two-pair wait; if either tile comes, I can win.
シャンポン待ちは、二つの対子のどちらかを刻子にできる形だ。
A two-pair wait is a shape where you can turn either of two pairs into a triplet.
The full phrase meaning 'two-pair wait'; シャンポン alone is often used as an abbreviation in context.
The call for claiming a discarded tile to complete a triplet; シャンポン refers to the waiting pattern involving two such potential calls.
From Chinese 双碰 (shuāng pèng, 'double pung'), a mahjong term. The reading シャンポン reflects a Japanese approximation of the Chinese sounds.