To make a sharp, crisp sound as two hard objects strike together repeatedly.
An imitative word derived from the sound it represents, similar to 'click' and 'clack.' It entered English in the 1500s as onomatopoeia.
Computer keyboards made a distinctive 'clack' that became iconic—some programmers now use mechanical keyboards specifically for that satisfying sound, even though silent keyboards are technically more efficient, proving humans crave sensory feedback from work.
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