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Webster
1913
Edition
Irestone
Ire′stoneˊ
,
Noun.
(Mining)
Any very hard rock.
Definition
2024
irestone
irestone
English
Noun
irestone
(
plural
irestones
)
(
mining
)
Any very
hard
rock
.
Etymology
From
iron
+
stone
. Compare
ironstone
.
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