Chalk"stone` (?), n.
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.