Lewis & Short

calcārĭus, a, um, adj. [2. calx], of or pertaining to lime, lime-: fornax, a limekiln, Cato, R. R. 38, 1; Plin. 17, 9, 6, § 53.
Also subst.

  1. A. calcārĭa, ae, f. (sc. fornax), a lime-kiln: de calcariā in carbonariam pervenire, Tert. Carn. Christ. 6.
    1. 2. (Sc. fodina.) A lime-quarry, Dig. 48, 19, 8, § 10.
  2. B. calcārĭus, ii, m., a limeburner, Cato, R. R. 16.