ROTARY

I. adjective Etymology: Medieval Latin rotarius, from Latin rota wheel Date: circa 1731 1. turning on an axis like a wheel, taking place about an axis , having an important part that turns on an axis , characterized by rotation, of, relating to, or being a press in which paper is printed by rotation in contact with a curved printing surface attached to a cylinder, II. noun (plural -ries) Date: circa 1888 a ~ machine, a road junction formed around a central circle about which traffic moves in one direction only