thirty.
2. thirty- adj. (? ordinal). Number thirty. Thirtieth year. APL. the days of the month, u. t. c. s. the January 30.
3. m. set of signs that represents the number 30.
4. m. game of tiles whose aim is to reach 30 points, and no more.
.1. f. game of cards or billiards, which consists of making so many 31 or points, and no more. U t. in pl. with the same meaning as in sing. Play to the thirty-one.
