What does knuckle-buster mean?
Knuckle-buster means (informal) A credit card imprinter..
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Pronunciation varies by accent · noun
(informal) A credit card imprinter..
Use knuckle-buster when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Knuckle-buster means (informal) A credit card imprinter..
Common synonyms include zip-zap machine.
The opposite depends on the specific sense.
Use knuckle-buster where its definition matches the intended context.
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