Lewis & Short

bessālis, e, adj. [bes],

  1. I. comprising eight: laterculus, a tile eight inches long, Vitr. 5, 10, 2; 7, 4, 2: scutula, Mart. 8, 71, 7: clausulae, Porphyr. prooem. ad Hor. Epod.
  2. II. Meton. for any thing of small value: comula, Petr. 58, 5.