Glass is a hard transparent substance that is used to make things such as windows and bottles.

Dark glasses are glasses which have dark-coloured lenses to protect your eyes in the sunshine .

Field-glasses are the same as → binoculars .

small low-powered binoculars used by audiences in theatres and opera houses

sunglasses that look like goggles

round steel-rimmed or gold-rimmed glasses

a musical instrument of the 18th century consisting of a set of glass bowls of graduated pitches, played by rubbing the fingers over the moistened rims or by a keyboard mechanism

spectacles with round thick lenses with a high degree of magnification

Reading glasses are glasses that are worn by people, for example when they are reading, because they cannot see things close to them very well.

spectacles the lenses of which have been made specifically to match the wearer's defects of vision

spectacles with gold-coloured frames

a cheerful or optimistic view of things, usually without valid basis

any of the several varieties of glass using combinations of colors , special effects of opaqueness and transparency , etc., to create an aesthetic effect

Cut glass is glass that has patterns cut into its surface.

a glass of a standard size (in Britain holding one pint , or half a pint) with straight sides, or with a handle , to drink beer from

a bell-shaped glass cover used to protect flower arrangements or fragile ornaments or to cover apparatus in experiments , esp to prevent gases escaping

a thin square of mounted glass used to protect a photographic slide

an old form of window glass made by blowing a globe and spinning it until it formed a flat disc

a small telescope often incorporating a prism and held in one hand

a hard, bright glass containing lead oxide and having a high index of refraction , used for lenses , crystal , etc.

a type of flat polished transparent glass made by allowing the molten glass to harden as it floats on liquid of higher density

cellular glass made by fusing powdered glass with carbon particles or other gas-generating material, used chiefly for industrial purposes

glass in its natural colour, usually greenish as a result of metallic substances in the raw materials

a magnifying glass with a handle

An hourglass is a device that was used to measure the passing of an hour . It has two round glass sections linked by a narrow channel, and contains sand which takes an hour to flow from the top section into the lower one.

glass that contains lead oxide as a flux

a viscous syrupy solution of sodium silicate in water: used as a protective coating for cement and a preservative , esp for eggs

opaque white glass , originally produced in imitation of Chinese porcelain

glass that is opalescent or white, made by the addition of fluorides

a tall narrow mirror , usually one of a pair or set, designed to hang on the wall between windows , usually above a pier table

Plate glass is thick glass made in large, flat pieces, which is used especially to make large windows and doors .

glass that has a deep rich red colour produced from oxides of various minerals, such as lead, copper , and iron

glass in sheet form produced by drawing or by the cylinder glass process

a small glass that holds a single measure of spirits

fine glass fiber , made by forming liquid glass into a thread

a sealed tube containing a solution supposed to change in appearance according to the weather

the triangular shaped glass on the side of an automobile between the windshield and the front door glass

a curved glass disc that covers the dial of a watch

any of various devices for measuring time that use the escape of water as the motive force

a viscous syrupy solution of sodium silicate in water: used as a protective coating for cement and a preservative , esp for eggs

A wine glass is a glass, usually with a narrow stem , which you use for drinking wine.

a sheet glass that contains a layer of reinforcing wire netting within it

a glass vessel from which air can be removed by suction or heat to create a partial vacuum : formerly used in drawing blood to the surface of the skin for slow bloodletting

glass used for making bottles , consisting of a silicate of sodium , calcium , and aluminium

a convex lens for concentrating the sun's rays into a small area to produce heat or fire

a colorful iridescent pressed glassware popular in the U.S. in the early 20th century

full-length mirror that can swivel

a glass for serving cocktails , typically bell-shaped and having a foot and a stem

a glass vessel from which air can be removed by suction or heat to create a partial vacuum : formerly used in drawing blood to the surface of the skin for slow bloodletting

a type of iridescent glass developed by L .C. Tiffany