D defs.my
Entry 2 senses Webster, 1913

Chalkstone

· Chalk·stone · IPA
01 n. A mass of chalk.
  1. 1.
    A mass of chalk.
    “As chalkstones . . . beaten in sunder.” — Isa. xxvii. 9.
  2. 2.
    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.(Med.)