A clatter or loud rattling sound; the act of clattering or making a rattling noise.
Likely a dialectal or onomatopoetic abbreviation of 'clatter' (making repeated sharp sounds). This appears to be informal or regional English vocabulary.
Like many words for sounds—'clang,' 'crash,' 'boom'—'clat' imitates the noise it describes, showing how human language creatively mirrors the sounds around us.
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