bluestone noun 11verb 1forms 3 noun11 •Any of several bluish-grey varieties of stone used for constructionWilliam rented the house on the corner of Lefevre Terrace and Tynte Street: a two-storey home of local bluestone with stuccoed enrichments, in high Victorian Italianate style. — 2008 •(UK) A form of dolerite which appears blue when wet or freshly broken. •(UK) Any of the several (massive) kinds of non-local stone (particularly dolerite) used to construct Stonehenge. •(US, Canada) A feldspathic sandstone found in the US and Canada. •(US) A form of limestone found in the Shenandoah Valley and some other places. •(Australia, New-Zealand) A bluish-grey basalt or olivine basalt. •(Australia) Slate, such as comes from quarries in or near Adelaide. •Either of two related copper- and sulfur-based bright blue stones. •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.‘You’ve on’y to soak the blade of the axe in bluestone the night before y’ start ringin’.’ — 1911 •Chalcanthite, a water-soluble sulfate mineral, CuSO₄·5H₂O.[…] of the mineral is a somewhat lighter shade of blue than that of bluestone (chalcanthite CuSOiSHjO). — 1949 •Lapis lazuli, or its core constituent, lazurite.From Cyprus were brought bricks of lead, with bluestone and elephant's tusks, and the vases were carved in fanciful designs, with the heads of goats, lions, bulls, and eagles. — 1892 verb1 •To treat or dose with copper sulfate.Bluestoning at any time of the year will destroy a number of snails […] — 1948 formsbluestoned · bluestoning · bluestones
