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Webster 1913 Edition
Chalkstone
Chalk′stoneˊ
,Noun.
1.
A mass of chalk.
As
chalkstones
. . . beaten in sunder. Isa. xxvii. 9.
2.
(Med.)
A chalklike concretion, consisting mainly of urate of sodium, found in and about the small joints, in the external ear, and in other situations, in those affected with gout; a tophus.