Giants means in the bible: They are unusually tall and large people, with great strength. These people are both mentioned before and after the Flood Gen. 6.4; Moses 8.18, and Num. 13:33; Deut. 2:10-11, 20; 3:11-13; 9:2; Josh. 15:8; 18:16. Raphah of Gath is said to have been the father of many giants, of which Goliath was 1 Sam. 17:4-7; 2 Sam. 21:16-22; 1 Chr. 20:6. 20:6. These giants were also called Anakims and Emims as well as Zamzummims.
(in Bible Dictionary)