(inorganic chemistry) A white, crystalline compound, BeO, used in semiconductors and in specialist ceramic applications.

(transitive) Alternative spelling of back onto

(literally) To move backwards away from something. / (idiomatic) To become less aggressive, particularly when one had appeared committed to act. / (idiomatic) To lower the setting of.

(idiomatic) Hunting or seeking; prowling about.

(idiomatic, intransitive) To leave; to begin a journey or trip. / (idiomatic, transitive) To begin; to cause; to initiate. / (idiomatic, transitive) To cause to explode, let off.

(transitive) To recall; to cancel or call a halt to. / (intransitive) To telephone in one's notice of a day's absence from work.

(idiomatic) Not incarcerated or in captivity; not under control. / (slang, archaic) Out on a spree, or in search of adventure.

carbon monoxide / carbon dioxide / carbon suboxide

(slang, Britain, New Zealand, Australia) A secondary lover, a mistress.

plural of son of a gun