"pigeon post" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pigeon post (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "68 32",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "85 15",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "90 10",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The use of homing pigeons to carry messages."
      ],
      "id": "en-pigeon_post-en-noun-Jtc8D9id",
      "links": [
        [
          "homing pigeon",
          "homing pigeon"
        ],
        [
          "message",
          "message"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Universities",
          "orig": "en:Universities",
          "parents": [
            "Schools",
            "Buildings",
            "Education",
            "Buildings and structures",
            "Society",
            "Architecture",
            "All topics",
            "Applied sciences",
            "Art",
            "Fundamental",
            "Sciences",
            "Culture"
          ],
          "source": "w"
        },
        {
          "_dis": "17 83",
          "kind": "topical",
          "langcode": "en",
          "name": "Post",
          "orig": "en:Post",
          "parents": [
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The university's internal mail system."
      ],
      "id": "en-pigeon_post-en-noun-Q6PRsB62",
      "links": [
        [
          "slang",
          "slang"
        ],
        [
          "university",
          "university"
        ],
        [
          "internal",
          "internal"
        ],
        [
          "mail",
          "mail"
        ],
        [
          "system",
          "system"
        ]
      ],
      "qualifier": "Oxford University slang",
      "raw_glosses": [
        "(UK, Oxford University slang) The university's internal mail system."
      ],
      "tags": [
        "UK",
        "uncountable"
      ]
    }
  ],
  "wikipedia": [
    "pigeon post"
  ],
  "word": "pigeon post"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English uncountable nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Post"
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pigeon post (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The use of homing pigeons to carry messages."
      ],
      "links": [
        [
          "homing pigeon",
          "homing pigeon"
        ],
        [
          "message",
          "message"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    },
    {
      "categories": [
        "British English",
        "Oxford University slang",
        "en:Universities"
      ],
      "glosses": [
        "The university's internal mail system."
      ],
      "links": [
        [
          "slang",
          "slang"
        ],
        [
          "university",
          "university"
        ],
        [
          "internal",
          "internal"
        ],
        [
          "mail",
          "mail"
        ],
        [
          "system",
          "system"
        ]
      ],
      "qualifier": "Oxford University slang",
      "raw_glosses": [
        "(UK, Oxford University slang) The university's internal mail system."
      ],
      "tags": [
        "UK",
        "uncountable"
      ]
    }
  ],
  "wikipedia": [
    "pigeon post"
  ],
  "word": "pigeon post"
}