BUMP

To strike, as with or against anything large or solid; to thump; as, to bump the head against a wall.

To come in violent contact with something; to thump. "Bumping and jumping." Southey.

A thump; a heavy blow.

A swelling or prominence, resulting from a bump or blow; a protuberance. It had upon its brow A bump as big as a young cockerel's stone. Shak.

One of the protuberances on the cranium which are associated with distinct faculties or affections of the mind; as, the bump of "veneration;" the bump of "acquisitiveness." [Colloq.]

The act of striking the stern of the boat in advance with the prow of the boat following. [Eng.]

To make a loud, heavy, or hollow noise, as the bittern; to boom. As a bittern bumps within a reed. Dryden.

The noise made by the bittern.