Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • abbr. rural free delivery

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • Rural Free Delivery, the U.S. postal system to rural areas that was started in the Great Depression.
  • Usenet request for discussion, a formal process for making changes.
  • Radio frequency device.
  • The IATA airport code for Northwest Chicagoland International Airport at Rockford.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. free government delivery of mail in outlying country areas

Etymologies

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