n.
heavy hitter
n. [ vb. n. from hit, v. ] The act of striking one thing against another;
n. [ From Heb. Khittīm Hittites. ] A member of an ancient people (or perhaps group of peoples) whose settlements extended from Armenia westward into Asia Minor and southward into Palestine. They are known to have been met along the Orontes as early as 1500
(Elec.) Rays (chiefly cathode rays) developed by the electric discharge in Hittorf tubes. [ Webster 1913 Suppl. ]
. (Elec.)