'clanger' definitions:

Definition of 'clanger'

From: WordNet
noun
A conspicuous mistake whose effects seem to reverberate; "he dropped a clanger"

Definition of 'clanger'

From: GCIDE
  • clanger \clanger\ n. A conspicuous mistake whose effects seem to reverberate; as, he dropped a clanger. [British] [WordNet 1.5]