UK, 1979—to sell a valuable resource or asset for immediate advantage—in particular: to dispose of a nation’s assets for financial gain—‘family silver’: something considered to be of great value, materially or otherwise
USA, 1831—very rare—since the late 17th century, the expression ‘hen’s teeth’ has been used as a type of something which is extremely rare, unattainable or non-existent
humorous variant of ‘one man’s meat is another man’s poison’—USA, 1929—refers to the phrase ‘the law of the Medes and Persians’, denoting something which cannot be altered
Australia, 1962—an immigrant from Britain who complains about Australia—‘Pommy’: apparently a shortening of ‘pomegranate’, used to designate an immigrant from Britain
Australia & UK—denotes physical ugliness; also used of temporary states such as tiredness, hangover, anger, etc. (Australia, 1946)—also denotes rapidity (Australia, 1947)
USA, 1820—with reference to cursive writing: to pay attention to every detail, especially when finishing off a task or undertaking; to be accurate and precise
also ‘to throw a wobbler’—New Zealand, 1964—to lose one’s self-control in a fit of nerves, temper, panic, etc.—‘wobbly’, also ‘wobbler’, denotes a fit of temper or panic
also ‘a wigwam for a goose’s bridle’—UK, 1836—denotes something absurd or preposterous; now typically used evasively in response to an unwanted or annoying question