Bump /(bŭmp; 215)/

imp. & p. p. Bumped; p. pr. & vb. n. Bumping

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

1. To come in violent contact with something; to thump.

1. A thump; a heavy blow.
2. 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.

3. 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.” (Phren.) [Colloq.]
4. The act of striking the stern of the boat in advance with the prow of the boat following. [Eng.]

1. To make a loud, heavy, or hollow noise, as the bittern; to boom.

   As a bittern bumps within a reed.

1. The noise made by the bittern.