Crossword-Solution: ABACUS 6 letters, 128 clues 🏆 scrabble score: 10

Well said our blessed rule, ‘Semper percutiatur leo vorans’.—Up on the lion! Down with the destroyer!” said he, shaking aloft his mystic abacus, as if in defiance of the powers of darkness—“Thy daughter worketh the cures, I doubt not,” thus he went on to address the Jew, “by words and sighs, and periapts, and other cabalistical mysteries.” “Nay, reverend and brave Knight,” answered Isaac, “but in chief measure by a balsam of marvellous virtue.” “Where had she that secret?” said Beaumanoir.

Abacus harmonicus (Mus.), an ancient diagram showing the structure and disposition of the keys of an instrument.

The earliest and simplest form of calculating apparatus was that employed by the schoolboys of ancient Greece, called the Abacus; consisting of a smooth board with a narrow rim, on which they were taught to compute by means of progressive rows of pebbles, bits of bone or ivory, or pieces of silver coin, used as counters.

The Romans subsequently adopted the Abacus, dividing it by means of perpendicular lines or bars, and from the designation of calculus which they gave to each pebble or counter employed on the board, we have derived our English word to calculate.

The same instrument continued to be employed during the middle ages, and the table used by the English Court of Exchequer was but a modified form of the Greek Abacus, the chequered lines across it giving the designation to the Court, which still survives.