a. 1. Emitting thunder. [ 1913 Webster ]
Roll the thundering chariot o'er the ground. J. Trumbull. [ 1913 Webster ]
2. Very great; -- often adverbially. [ Slang ] [ 1913 Webster ]
-- Thun"der*ing*ly, adv. [1913 Webster]
n. Thunder. Rev. iv. 5. [ 1913 Webster ]