Quick answer: “Nút (Point Digit)” means The unit-digit point value used in 3-card point games like Bài Cào/Cào Rùa. For example, total 17 is counted as 7 nút.
Scoring
Nút (Point Digit)
The unit-digit point value used in 3-card point games like Bài Cào/Cào Rùa. For example, total 17 is counted as 7 nút.