SLATE n.
e spar (Min.), a variety of calcite of silvery white luster and of a slaty structure. -- Transparent slate, a plate of translucent material, as ground glass, upon which a copy of a picture, placed beneath it, can be made by tracing.
SPHERE n.
In ancient astronomy, one of the concentric and eccentric revolving spherical transparent shells in which the stars, sun, planets, and moon were supposed to be set, and by which they were carried, in such a manner as to produce their apparent motions.
SPIN v.
(a web, a cocoon, silk, or the like) from threads produced by the extrusion of a viscid, transparent liquid, which hardens on coming into contact with the air; -- said of the spider, the silkworm, etc.
TEAR n.
Something in the form of a transparent drop of fluid matter; also, a solid, transparent, tear-shaped drop, as of some balsams or resins. Let Araby extol her happy coast, Her fragrant flowers, her trees with precious tears. Dryden.