n. 1. in mahjong, the making of a set of three like pieces (tríyu) by adding a discarded piece to one’s hand (káun, 3a). 2. see tríyu. túdu — a hand consisting of all tríyus and an ay (and thus wins). túdu — plásis a plásis hand which also is a túdu pung. túdu — ul-ap a túdu pung hand where no tríyu has been laid open on the table. túdu — uldáwun n. a túdu pung hand where the tríyus have all been laid open on the table; v. 1. make a set of three like pieces; 2. make a tríyu hand in card games.