'Calc-tufa' definitions:

Definition of 'calc-tufa'

From: WordNet
noun
A soft porous rock consisting of calcium carbonate deposited from springs rich in lime [syn: tufa, calc- tufa]

Definition of 'Calc-tufa'

From: GCIDE
  • Calc-tufa \Calc"-tu`fa\, n. [G. kalk (l. calx) lime + E. tufa.] See under Calcite. [1913 Webster]