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Pronunciation varies by accent · noun
The box or ring of metal connecting the contiguous ends of two lengths of shafts..
Use coupling-box when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Coupling-box means The box or ring of metal connecting the contiguous ends of two lengths of shafts..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use coupling-box where its definition matches the intended context.
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