D defs.my
Entry 3 senses Webster, 1913

dingdong

· ding·dong · IPA
01 n. The sound of, or as of, repeated strokes on a metallic body, as a bell; a repeated and monotonous sound.
  1. 1.
    The sound of, or as of, repeated strokes on a metallic body, as a bell; a repeated and monotonous sound.
  2. 2.
    An attachment to a clock by which the quarter hours are struck upon bells of different tones.(Horol.)
  3. 3.
    a stupid or foolish person; -- used in a deprecatory or contemptuous sense.[slang]
Syn. ding-a-ling, doofus.