"file 13" meaning in English

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      "expansion": "file 13 (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "American English",
          "parents": [],
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      "examples": [
        {
          "text": "Just put it in file 13. It doesn't warrant a response.",
          "type": "example"
        },
        {
          "ref": "1957, Cy Linder, “Piston Poppin’”, in American Motorcycling, page 34",
          "text": "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”.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A trash can, wastepaper basket."
      ],
      "id": "en-file_13-en-noun-1p3Gcyun",
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        [
          "trash can",
          "trash can"
        ],
        [
          "wastepaper basket",
          "wastepaper basket"
        ]
      ],
      "raw_glosses": [
        "(US, military slang, dated) A trash can, wastepaper basket."
      ],
      "synonyms": [
        {
          "word": "circular file"
        },
        {
          "word": "round file"
        }
      ],
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      "wikipedia": [
        "file 13"
      ]
    }
  ],
  "word": "file 13"
}

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      "expansion": "file 13 (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "text": "Just put it in file 13. It doesn't warrant a response.",
          "type": "example"
        },
        {
          "ref": "1957, Cy Linder, “Piston Poppin’”, in American Motorcycling, page 34",
          "text": "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”.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A trash can, wastepaper basket."
      ],
      "links": [
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          "military",
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        ],
        [
          "wastepaper basket",
          "wastepaper basket"
        ]
      ],
      "raw_glosses": [
        "(US, military slang, dated) A trash can, wastepaper basket."
      ],
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      "wikipedia": [
        "file 13"
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  ],
  "synonyms": [
    {
      "word": "circular file"
    },
    {
      "word": "round file"
    }
  ],
  "word": "file 13"
}