1º_ To do or have something related to the number of 3. It is said to do three tasks, to reach three periods, to incorporate a third element, to divide into thirds. . . There are specific cases of the previous meaning, such as diluting and adulterating a wine with a third of water, or mediating a dispute between two (such as a third, although this number may be more flexible), or interpretations of the latter such as "joining a conversation", "balancing a weight or burden", "completing a number of people", . . . 3º_ To cross something, to put it cross, cross, or diagonally.