1. a person or thing that strikes against or collides with something
2. something that encroaches upon or infringes on rights, territory, or boundaries
3. a device or mechanism that directs a stream of fluid against a surface
Usage: technical

Examples

• The impinger caused damage when it struck the wall.
• Foreign competitors were seen as impingers on the local market.
• The spray impinger distributed the coating evenly across the surface.
• Legal experts identified the new law as an impinger on constitutional rights.
• The jet impinger system improved the efficiency of the cooling process.
• Protesters viewed the development as an impinger on their community space.