Word Origin & History
ding1819, "to sound as metal when struck," possibly abstracted from ding-dong (1659), of imitative origin. The verb meaning "to deal heavy blows" is c.1300, probably from O.N. dengja "to hammer." Meaning "dent" is 1960s. Dinger "something superlative" (e.g. humdinger) is from 1809, Amer.Eng. Ding-a-ling
EXPAND "one who is crazy" is 1935, from notion of hearing bells in the head.
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