A light blow or jolting collision. • The sound of such a collision. • A protuberance on a level surface. • A swelling on the skin caused by illness or injury. • One of the protuberances on the cranium which, in phrenology, are associated with distinct faculties or affections of the mind. • The faculty itself. • The point, in a race in which boats are spaced apart at the start, at which a boat begins to overtake the boat ahead. • The swollen abdomen of a pregnant woman. • A post in an Internet forum thread made in order to raise the thread's profile by returning it to the top of the list of active threads. • A temporary increase in a quantity, as shown in a graph. • A dose of a drug such as ketamine or cocaine, when snorted recreationally. • A disco dance in which partners rhythmically bump their hips together. • In skipping, a single jump over two consecutive turns of the rope. • A coarse cotton fabric. • A training match for a fighting dog. • The jaw of either of the middle pockets. • Music, especially played over speakers at loud volume with strong bass frequency response. • A short, self-promotional spot on a radio or television station. • A reassignment of jobs within an organization (for example, when an existing employee leaves) on the basis of seniority. • In the game of khanhoo, the act of claiming a newly discarded card when it is not one's turn, permitted when one can use the card to form a meld other than a sequence. • A minor problem or difficulty. • A sudden movement of underground strata, preceded by a characteristic sound. • An undercover contact or staged encounter used to elicit information, prompt a reaction, or arrange a follow-up meeting with a suspect or person of interest.