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1590s, 'protuberance caused by a blow;' 1610s as 'a dull-sounding, solid blow;' see bump (v.). The dancer's bump and grind attested from 1940. To be like a bump on a log 'silent, stupidly inarticulate' is by 1863, American English.
bump (v.)
1560s, 'to bulge out;' 1610s, 'to strike heavily, cause to come into violent contact,' perhaps from Scandinavian, probably echoic, if the original sense was 'hitting' then of 'swelling from being hit.' It also has a long association with the obsolete verb bum 'make a booming noise.' To bump into 'meet by chance' is from 1886; to bump off 'kill' is by 1908 in underworld slang. Related: Bumped; bumping. Bumpsy (adj.) was old slang for 'drunk' (1610s).
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A cherry angioma is a smooth, cherry-red bump on the skin. The size of the growths can vary from the size of a pinhead to about a quarter inch in diameter.
![Bump Bump](https://memoirs4mymunchkins.files.wordpress.com/2012/05/hannah-bump.jpg)
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bumbling
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bummer
![Bump Bump](/uploads/1/2/6/2/126271612/472617333.jpg)
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