Definition of jasper
- jasper Noun Any bright-coloured kind of chalcedony apart from cornelian.
- jasper Noun An opaque, impure variety of quartz, of red, yellow, and other dull colors, breaking conchoidally with a smooth surface.
- jasper Noun Jasperware pottery.
- jasper Noun A wasp. (West Country dialects, Somerset County)
- jasper Noun A person, a guy, especially seen as naïve or simple.