- w:Rural delivery service|Rural Free Delivery, the U.S. postal system to rural areas that was started in the w:Great Depression|Great Depression.
- w:Usenet|Usenet request for discussion, a formal process for making changes.
- Radio frequency device.
- The IATA airport code for w:Northwest Chicagoland International Airport at Rockford|Northwest Chicagoland International Airport at Rockford.
Wiktionary:Requests_for_deletion|Wiktionary - Requests for Deletion