100-point sticks deposited after dealer win
Mahjong term: the 100-point sticks that the dealer places on the table after winning a hand, used to track bonus payments.
When the dealer wins, they place a 100-point stick on the table as a bonus indicator.
Compound of 積み (tsumi, 'accumulation') + 棒 (bō, 'stick'), referring to the sticks used to count accumulated bonus points in mahjong.