ツモ切り
Meanings
1
discarding a just-drawn tile
In mahjong, the act of drawing a tile (ツモ) and immediately discarding it without using it in one's hand. Often done to maintain a concealed hand or when the tile is not useful.
See also: ツモ
He repeatedly discarded the tiles he drew, arranging his hand.
I discard the safe tile I just drew, preparing for riichi.