noun A light blow or a jolting collision. (a nasty bump on the head) A protuberance on a level surface. (bumps in the road) An increase. (there was a bump in the number of outbound flights) (in an online forum) an act of posting on an inactive thread in order to move it to the top of the list of active threads. (I'm giving this thread a well-deserved bump) A loosely woven fleeced cotton fabric used in upholstery and as lining material.
verb Knock or run into someone or something with a jolt. (I almost bumped into him) Move or travel with much jolting. (the car bumped along the rutted track) Refuse (a passenger) a reserved place on a flight because of deliberate overbooking by the airline. (if you check in on time and are bumped, you will be entitled to a full refund) (in an online forum) post on (an inactive thread) in order to move it to the top of the list of active threads. (if no one responds after 24 hours, you can bump your thread)