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]