American English—a surge of extremely cold air which causes rapid falls in temperature and severe wintry weather in central and eastern areas of the United States and Canada—after ‘Trans-Siberian Express’, the name of a railway running from Moscow to Vladivostok on the Sea of Japan
Australia, 1863—originally referred to any chain of communications by which bushrangers were warned of police movements—soon extended to any rapid informal network by which information, rumour, gossip, etc., is spread
UK, 1808—to make one’s beliefs or intentions plain—from the former practice of nailing an ensign to the mast of a ship, after damage during battle resulted in the ship’s colours no longer being clearly displayed, which otherwise might have been interpreted as a signal of surrender
USA, 1917—a method of treating a drug addict by sudden and complete withdrawal of the drug, instead of by a gradual process—alludes to the goose pimples, resembling the skin of a cold turkey, that a person experiences as a side effect of the treatment
UK, 1824—thoroughly or perfectly right—‘trivet’: a metal tripod for a cooking pot or kettle to stand on—the phrase refers to a trivet’s always standing firm on its three feet
UK, 1860—very much, very intensely—‘billy-o’ occurs only in this phrase—it is apparently composed of ‘Billy’, pet form of the male forename ‘William’, and the suffix ‘-o’, used to form slang and colloquial nouns, adjectives and interjections
UK—‘the Beast from the East’ (2011): polar continental air mass, which brings wintry conditions—‘the Pest from the West’ (2012): mild air from the Atlantic, which brings strong winds and heavy rainfalls
UK, 2005—the perceived indiscriminate and excessive use by the authorities of anti-social behaviour orders—apparently coined by Álvaro Gil-Robles, the Council of Europe’s Commissioner for Human Rights—‘Asbo’: acronym from the initial letters of ‘anti-social behaviour order’
Australia, 1927—very drunk; sated with food—‘goog’, Australian-English slang for an egg, was perhaps formed on the sense of ‘gog’ in ‘goosgog’, denoting a gooseberry