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Pronunciation varies by accent · noun
(mining) A narrow opening for ventilation driven through coal or rock, separating the two passages..
Use crossheading when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Crossheading means (mining) A narrow opening for ventilation driven through coal or rock, separating the two passages..
Common synonyms include headway, crosshead.
The opposite depends on the specific sense.
Use crossheading where its definition matches the intended context.
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