boneyard

noun

1. (informal)A graveyard.
2. In the game of dominoes, the pile of upside-down pieces that have yet to be used.
3. (slang)A dumpsite for obsolete or unusable aircraft etc; a junkyard.

   “B-52s in a boneyard”

   “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"?”

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

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

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