‘to live on one’s hump’: meaning and origin

late 19th century—to be self-sufficient, to operate from resources accumulated earlier—refers to the ability of a camel to survive for long periods without food or water by drawing on the store of nourishment contained in its hump

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‘goldfish’ (as used of intelligence and of memory)

USA 1920: ‘to have the brains of a goldfish’ (to have limited intelligence)—USA, 1958: ‘to have the memory of a goldfish’ (to be unable to retain information or memories for any significant length of time)

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‘dinosaur juice’: meaning and origin

USA, 1977—petroleum, and any liquid derived from petroleum used in a vehicle powered by an internal-combustion engine—perhaps from popular association of ‘dinosaur’ with ‘fossil fuel’

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‘sparrowfart’: meanings and origin

British, dialectal, 1828: the break of day, i.e., the dawn chorus, with humorous allusion to a small passerine breaking wind—later also: an insignificant person or thing

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‘kangaroo-ship’: meaning and origin

1910s—a ship designed to carry submarines—likens the submarines carried in such ships to the immature young nursed in the abdominal pouch of female kangaroos

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