Found 2 items, similar to bluestone.
English → English (WordNet) Definition: bluestone bluestone n : bluish-gray sandstone used for paving and building
English → English (gcide) Definition: Bluestone Bluestone \Blue"stone`\, n. 1. Blue vitriol. --Dunglison. [1913 Webster] 2. A grayish blue building stone, as that commonly used in the eastern United States. [1913 Webster]