A bump is a small, raised area on a surface, often caused by a collision or impact. It can also refer to a slight jolt or movement, such as when a vehicle hits a pothole or a person bumps into another. In slang terms, a bump can mean a small amount of a drug, typically cocaine, snorted through the nose. Additionally, bump can be used as a verb to describe the act of hitting or jostling something, or to increase or raise something, such as a price or a volume level. In a figurative sense, bump can also mean to move up or advance, as in a career or social status. Overall, bump is a versatile word that can describe physical, social, and metaphorical actions and effects.