A.slab, board:
1. reckoning-board, used for counting votes, Arist.Ath.69.1.
b. board sprinkled with sand or dust for drawing geometrical diagrams, S.E.M.9.282, Iamb.Protr. 34 (pl.), VP5.22.
2. dice-board, Caryst.3.
3. sideboard, Ammon.Diff.1.
4. trencher, plate, Cratin.86, cf. BCH29.510 (Delos, iii B.C.).
II. in Lat. form abacus, slab on capital of column, Vitr.3.5.5.
2. marble wall-slab, Id.7.3.10.
III. v. ἀβακής.