USA—1940: a policy of non-acceptance with regard to a specified situation, activity, result, substance, etc.—1971: a policy of non-acceptance with regard to abusive, anti-social or criminal behaviour, especially the use of illegal drugs
UK, 1836—a person, country, etc., that appears powerful or threatening but is actually weak or ineffective—from Chinese ‘zhǐlǎohǔ’ (‘zhǐ’, paper, ‘lǎohǔ’, tiger)—used in the post-war years by the Chinese Communist Party of the USA and other reactionaries
USA, 1889—when a situation reaches a critical point and one must commit oneself to an action or decision—the image is of having to shove when mere pushing is ineffective
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, 1775—to do or say something remarkable or startling—the precise underlying notion in the choice of ‘Dutch’ is not clear—‘Dutch’ occurs in a number of derogatory or derisive English phrases
UK, 1928—of a public-house: very basic and lacking in comforts—refers to the former practice of covering the floor of a public-house with sawdust into which customers spat