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.