"cannon box" meaning in English

{
  "forms": [
    {
      "form": "cannon boxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "es"
      },
      "expansion": "cannon box (plural cannon boxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mechanical engineering",
          "orig": "en:Mechanical engineering",
          "parents": [
            "Engineering",
            "Applied sciences",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1959 June, “The first \"Peak\" class 2,300 h.p. diesel-electric locomotive for B.R.”, in Trains Illustrated, page 296:",
          "text": "The outermost non-driven axle forms a pony truck within the bogie frame, with its bearings in a cannon box.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A type of enclosure for axle bearings."
      ],
      "id": "en-cannon_box-en-noun-sNxfTlpO",
      "links": [
        [
          "mechanical engineering",
          "mechanical engineering"
        ],
        [
          "enclosure",
          "enclosure"
        ],
        [
          "bearing",
          "bearing"
        ]
      ],
      "raw_glosses": [
        "(mechanical engineering) A type of enclosure for axle bearings."
      ],
      "topics": [
        "engineering",
        "mechanical",
        "mechanical-engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "cannon box"
}

{
  "forms": [
    {
      "form": "cannon boxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "es"
      },
      "expansion": "cannon box (plural cannon boxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Mechanical engineering"
      ],
      "examples": [
        {
          "ref": "1959 June, “The first \"Peak\" class 2,300 h.p. diesel-electric locomotive for B.R.”, in Trains Illustrated, page 296:",
          "text": "The outermost non-driven axle forms a pony truck within the bogie frame, with its bearings in a cannon box.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A type of enclosure for axle bearings."
      ],
      "links": [
        [
          "mechanical engineering",
          "mechanical engineering"
        ],
        [
          "enclosure",
          "enclosure"
        ],
        [
          "bearing",
          "bearing"
        ]
      ],
      "raw_glosses": [
        "(mechanical engineering) A type of enclosure for axle bearings."
      ],
      "topics": [
        "engineering",
        "mechanical",
        "mechanical-engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "cannon box"
}