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A slightly convex mirror, commonly of black glass, used as a toy for viewing the reflected landscape.

A small sandglass, running about three minutes, for marking time in boiling eggs; also, a small glass for holding an egg, at table.

A lens of glass to assist the sight. Eyeglasses are used singly or in pairs.

A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; -- so called, because formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf…

A heavy-armed foot soldier from Ireland and the Western Isles in the time of Edward Shak.

An instrument for measuring time, especially the interval of an hour. It consists of a glass vessel having two compartments, from the uppermost of which a quantity of sand, water, or mercury occupies an hour in running through a small aperture unto the lower.

A semitransparent, whitish, and very pure from of gelatin, chiefly prepared from the sounds or air bladders of various species of sturgeons (as the Acipenser huso) found in the of Western Russia. It used for making jellies, as a clarifier, etc. Cheaper forms of gelatin are not unfrequently so called. Called also fish g…

See Venus's looking-glass, under Venus.

A mirror made of glass on which has been placed a backing of some reflecting substance, as quicksilver. There is none so homely but loves a looking-glass. South.

Slender rods or tubes of colored glass fused together and embedded in clear glass; -- used for paperweights and other small articles.

Mica; muscovite. See Mica.

Glass with one side smooth and the other side formed into sharp-edged ridges so as to reflect the light that passes through, used at windows to throw the light into the interior.

An instrument for measuring time by the running of sand. See Hourglass.

A small telescope for viewing distant terrestrial objects.

A glass vessel, usually cylindrical, filled with a solution which is sensitive to atmospheric changes, indicating by a clouded appearance, rain, snow, etc., and by clearness, fair weather.

A convex lens of glass for producing heat by converging the sun's rays into a focus. "Lighting a cigar with a sunglass." Hawthorne.

See Soluble glass, under Glass.

ic pressure, and hence changes of weather, as a barometer or baroscope. Poor man's weatherglass. (Bot.) See under Poor.

A small glass from to drink wine.

As much as a wineglass will hold; enough to fill a wineglass. It is usually reckoned at two fluid ounces, or four tablespoonfuls.