bluestone

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blue·stone

 (blo͞o′stōn′)
n.
1. A bluish-gray sandstone used for paving and building.
2. A stone similar to this kind of sandstone.

bluestone

(ˈbluːˌstəʊn)
n
1. (Geological Science) a blue-grey sandstone containing much clay, used for building and paving
2. (Elements & Compounds) the blue crystalline form of copper sulphate
3. (Geological Science) a blue variety of basalt found in Australia and used as a building stone

blue•stone

(ˈbluˌstoʊn)

n.
a bluish sandstone.
[1645–55]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.bluestone - bluish-grey sandstone used for paving and building
sandstone - a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)
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