calculus

calculus ī, m dim.

2 calx, a small stone, pebble : coniectis in os calculis. — Sing collect. : dumosis calculus arvis, in the fields , V.— A stone used in reckoning : calculis subductis, computed, cast up.—A counter used in playing draughts , O.—Fig.: amicitiam ad calculos vocare, hold to a strict account : si ad calculos eum res p. vocet, L.— A voting-pebble, ballot : calculus ater, i. e. for condemnation , O.: ad illos calculos revertamur, i. e. those principles of action .