Definitions
1.verbTo knock against or run into with a jolt.
2.verbTo move up or down by a step; displace."I bumped the font size up to make my document easier to read."
3.verbTo post in an Internet forum thread in order to raise the thread's profile by returning it to the top of the list of active threads.
4.verb(of a superheated liquid) To suddenly boil, causing movement of the vessel and loss of liquid.
5.verbTo move (a booked passenger) to a later flight because of earlier delays or cancellations.
6.verbTo move the time of (a scheduled event).
7.verbTo pick (a lock) with a repeated striking motion that dislodges the pins.
8.verbTo make a loud, heavy, or hollow noise; to boom.
9.verbTo spread out material so as to fill any desired number of pages.
10.nounThe sound or action of a bump.