Bumpa

Part of speech: noun

Definitions

1. A term informally used to describe a small raised area or swelling on a surface; a friendly or casual greeting involving light physical contact; a moderate impact or collision between objects
2. An informal label for a protrusion or lump on a surface; an expression for a warm, physical gesture such as a fist bump or hug; a minor jolt or knock during movement or contact
3. A colloquial designation for a raised spot or bulge; a casual salutation often involving a light touch like a fist bump; a slight, physical impact causing movement or reaction

Etymology: The noun "bump" for a small raised swelling grew out of an older sense of a heavy knock or thud. Its origin is imitative, meaning it was shaped to sound like the blow it describes, a pattern common in English words for sudden impacts. "Bumpa" most likely belongs to the same family. In Swedish, "bumpa" is a verb meaning "to bump," so the form probably came from a Scandinavian root that shares that imitative sound. Its use as a noun for a small lump is likely a later extension of that sense, with the swelling understood as the result of a knock.