boneyard

plural boneyards

1. informalA graveyard.
2. dominoesIn the game of dominoes, the pile of upside-down pieces that have yet to be used.
3. slangaeronauticsA dumpsite for obsolete or unusable aircraft etc; a junkyard.

   B-52s in a boneyard

   4 more examples

   a 440 V-8 from the boneyard

   Or what is conveyed to those unversed in railway matters by reports following a shed visit that "the frame of Claud Hamilton lay in the boneyard and had many endearing messages of farewell chalked on it"?

   1951 April, R. S. McNaught, “Railway Enthusiasts”, in Railway Magazine, number 600, page 269

   The “Boneyard” is a place of antiques and historic symbolism, a burial ground for aircraft.

   1999, Naval Aviation News, volumes 82-83, page 37

   Beginning in December 1969, the entire fleet was retired to the “boneyard” at Davis-Monthan AFB in Tucson, Arizona.

   2017, William A. Flanagan, Aviation Records in the Jet Age

   Synonyms: aircraft graveyard

4. firefightingAn area scraped down to the mineral soil, so that smouldering material can be placed there without starting another fire.