Ăg'i-tā'tor, n.
n. [Lat. agitator, Fr. agitateur.]
Sense 1. One who agitates; specifically (Eng. Hist.), one of a body of men appointed by the army, in Cromwell's time, to look after their interests;—called also agitators. Clarendon.
Sense 2. A contrivance for shaking or shifting, as in a furnace. Appleton's Mech. Dict.