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A green siliceous stone sprinkled with red jasper, as if with blood; hence the name; -- called also heliotrope.

A grayish blue building stone, as that commonly used in the eastern United States.

A stone running through a wall from one face to another, to bind it together; a binding stone.

Having a bud or button, or a kind of trefoil, at the end; furnished with knobs or buttons. Cross bottony (Her.), a cross having each arm terminating in three rounded lobes, forming a sort of trefoil.

Made of, or pertaining to, brimstone; as, brimstone matches. From his brimstone bed at break of day A-walking the devil has gone. Coleridge.

A dark variety of sandstone, much used for building purposes.

A cellular, flinty rock, used for mill stones. [Written also burrstone.]

See Buhrstone.

See Buhrstone.

A cream-colored limestone for building, found near Caen, France.

A yellow or smoky brown variety of rock crystal, or crystallized quartz, found esp, in the mountain of Cairngorm, in Scotland.

g the angles marked by, or decorated with, projecting moldings or small columns; as, a cantoned pier or pilaster.

A fossil echinus of the genus Cannulus; -- so called from its supposed resemblance to a cap.

A mass of chalk. As chalkstones . . . beaten in sunder. Isa. xxvii. 9.

A series of limestone strata found in Ohio and farther west, presenting bluffs along the rivers and valleys, formerly supposed to be of one formation, but now known to be partly Silurian and partly Devonian.

Having the flesh attached closely to the stone, as in some kinds of peaches. -- n.

An igneous rock of feldspathic composition, lamellar in structure, and clinking under the hammer. See Phonolite.

A large pebble; a rounded stone not too large to be handled; a small boulder; -- used for paving streets and for other purposes.

Cobblestone. [Prov. Eng.]

A stone for coping. See Coping.