(Britain, euphemistic, humorous) A sharp, sudden headbutt to the nose, usually resulting in a broken nose.

A pair of small low-powered binoculars for use at a theatrical performance.

plural of opera glass

One or more pairs of small low-powered binoculars for use by members of the audience at a theatrical performance.

(chemistry) A solution of sodium silicate in water.

(inorganic chemistry) potassium sulphate

A vessel of about 30ml volume, used for the measurement of spirituous liquors.

(historical) 1980s and early 1990s policy of the Soviet Union under Gorbachev to allow more government transparency; often paired with perestroika

(horticulture, literally) In a greenhouse, a cold frame, or a similar structure; said of the propagation and growth of plants. / In a glass case, like an item in a museum. / (idiomatic, slang) In jail.

A parish about two miles north of the City of Dublin, Ireland, known for its cemetery. / An unincorporated community in the Rural Municipality of Key West No. 70, Saskatchewan, Canada.