Having a fixed stare and a wide-eyed appearance, due to boredom, lack of emotion, attention or interest, etc.

A field glass used at horseraces, usually as a pair (binoculars).

glass (having a high lead content) that resists the penetration of X-rays and gamma rays

(inorganic chemistry) Any of several inorganic polymers of sulphur, selenium and tellurium, that are transparent to infrared radiation and are used in optics.

a non-graphitic form of carbon used for electrodes and high-temperature crucibles

An aircraft cockpit with its avionics displayed on computer screens, rather than on gauges.

Do not criticize others if you have similar weaknesses yourself.

glass made from silica and a mixture of soda and lime

(US) the glass in which drinks are served in a soda fountain / glass manufactured using soda ash

(mineralogy) An evaporite, consisting of potassium sulphate.