Nit

1. The smallest measurable unit of brightness that is used to measure the brightness of the surface area of a monitor, LCD or other display device.
2. Short for Network Information Table, NIT is commonly used to describe a table listing network information.  
3. Short for Network Interface Tap, NIT is a network device driver included with the SunOS used to capture packets only received by the interface.
4. Term used to describe a small and unimportant imperfection with a product.

Also see: Network definitions, Video definitions