file 13

noun

noun

Government, Military, Politics, War US, Dated, Slang A trash can, wastepaper basket.

Just put it in file 13. It doesn't warrant a response.
If not, it’s not going to be of value to you or anyone else to put it in print after the event has taken place. Therefore it will be filed in file 13, and just in case you’re not familiar with this file, the army calls it the “waste-basket”.1957, Cy Linder, “Piston Poppin’”, in American Motorcycling, page 34:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.