BUMP

noun a thump; a heavy blow.

2. bump ·noun the noise made by the bittern.

3. bump ·noun a swelling or prominence, resulting from a bump or blow; a protuberance.

4. bump ·vi to come in violent contact with something; to thump.

5. bump ·vi to make a loud, heavy, or hollow noise, as the bittern; to boom.

6. bump ·noun the act of striking the stern of the boat in advance with the prow of the boat following.

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

8. bump ·noun 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.".