骰子しゃいつMeanings1noundice; dieChinese loanword used especially in mahjong; the common Japanese word for dice is サイコロ.from Chinese shǎiziSee also: サイコロ麻雀まーじゃんでは、シャイツを振ふって親おやを決きめる。In mahjong, you roll the dice to decide the dealer.