Bump - n., adv., & v. 1. n. Collision of two surfaces, sound made by it, bulge resembling this esp. any of those on head regarded by phrenologists as indicating qualities (has no ~ of locality, does not remember places); jolt of vehicle; jolt experienced by aircraft in flight, variation of air pressure causing this; (boat racing) touch in bumping-race; bittern's cry. 2. adv. With a ~ (fell ~ on the floor) 3. v.t. & i. Inflict ~ or ~ s on (one's head, boat in front, person held horizontal by arms and legs &c.), strike (thing held, part, &c.) or come ~ against or against something, put ~ down or on something; (of boat) strike rock or bottom, (of vehicle) jolt, (often along); (of cricket-ball) rise abruptly; (of bittern) boom.
*~ off (sl.), remove by violence, murder. ~ing-race (of many boats behind each other in river, a point being scored by any that overtakes & touches the one before it); ~-supper (celebrating ~ in boat-race).
Hope that clears that up for you. <img src="graemlins/glee.gif" border="0" alt="[Glee]" />