bluestone
noun, verb, proper noun
Forms bluestones bluestoning bluestoned
- noun Any of several bluish-grey varieties of stone used for construction:
- noun (UK) A form of dolerite which appears blue when wet or freshly broken.
- noun (UK) Any of the several (massive) kinds of non-local stone (particularly dolerite) used to construct Stonehenge.
- noun (US, Canada) A feldspathic sandstone found in the US and Canada.
- noun (US) A form of limestone found in the Shenandoah Valley and some other places.
- noun (Australia, New Zealand) A bluish-grey basalt or olivine basalt.
- noun (Australia, South Australia) Slate, such as comes from quarries in or near Adelaide.
- noun Copper(II) sulfate, CuSO₄(H₂O)ₓ where x is 0-5, used as a coloring agent in glass-making and pottery and for other purposes.
- verb (transitive) To treat or dose with copper sulfate.
- proper noun A surname.
Etymology
From blue + stone.
Webster’s 1913
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “bluestone”, CC BY-SA 4.0. Details