What does the word freestone mean?

Usage examples for freestone

  1. It is constructed of Freestone, painted white. – Shepp's Photographs of the World by James W. Shepp Daniel B. Shepp
  2. On an old freestone slab in Muncaster Church is the inscription, Holie Kynge Harrye gave Sir John a brauve workyd glass cuppe ... – Bygone Cumberland and Westmorland by Daniel Scott