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Pronunciation varies by accent · noun
A rounded stone that is larger than a pebble; a cobblestone..
Against the huge boulderstones which lay scattered about on the shore, the mighty waves broke incessantly in the maddest and most diversified manner.
Use boulderstone when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Boulderstone means A rounded stone that is larger than a pebble; a cobblestone..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Against the huge boulderstones which lay scattered about on the shore, the mighty waves broke incessantly in the maddest and most diversified manner.
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