абак

Borrowed from Russian аба́к derived from French abaque (slab at the top of a column, art of arithmetic, counting board) derived from Latin abacus (abacus, board, panel, counting board) derived from Ancient Greek ἄβαξ (board, board covered with sand, a calculation board covered with sand, calculating, board slab, counting board, board for drawing, plate, dice-board, board covered with sand for drawing).

Ancient Greek