Definition of "bumping"

There was nothing to be seen, but he could hear loud thumpings and bumpings which seemed to come from the back of the house.

1941, Gladys Mitchell, When Last I Died

He listened, and with respect too, to Mr. Foker’s accounts of what the men did at the University of which Mr. F. was an ornament, and encountered a long series of stories about boat-racing, bumping, College grass-plats, and milk-punch—and began to wish to go up himself to College to a place where there were such manly pleasures and enjoyments.

1848 November – 1850 December, William Makepeace Thackeray, chapter 3, in The History of Pendennis. […], volumes (please specify |volume=I or II), London: Bradbury and Evans, […], published 1849–1850