| Meaning | Category |
| Bitmap graphics (Neutral Raster File) | Computing->File Extensions |
| National Retail Federation | Business->Firms |
| Naval Reserve Force | Governmental->Military Governmental->US Government |
| Nederlandse Rittensport Federatie | Community->Sports |
| Norsk Rødt Fe (Norwegian Red Cattle) | Miscellaneous->Farming |
| Northwest Regional Forecast | Academic & Science->Meteorology Governmental->US Government |
| Not Ready For .... | Governmental->Military |
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