What's the difference between dingdong and dong?

Dingdong

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Definition:

• (n.) The sound of, or as of, repeated strokes on a metallic body, as a bell; a repeated and monotonous sound.
• (n.) An attachment to a clock by which the quarter hours are struck upon bells of different tones.

Example Sentences:

• (1) The interviewer's got to go from him to him to him ... and it can too often become a dingdong."

Dong

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Definition:

Example Sentences: