"clack box" meaning in English

{
  "forms": [
    {
      "form": "clack boxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "clack box (plural clack boxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "45 27 29",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1946 March and April, “The Why and The Wherefore: Clack-Boxes”, in Railway Magazine, page 129",
          "text": "The connecting pipe between a locomotive injector and the boiler, through which the water is forced into the boiler against the steam pressure within, is provided with a \"clack-valve,\" which allows the water to pass in the inward direction only and not the outward; this is housed in a \"clack-box\". No question of \"advantages or disadvantages\" attaches to the use of a clack-box; it is a necessary part of locomotive equipment.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The box or chamber in which a clack valve works."
      ],
      "id": "en-clack_box-en-noun-ydNhF1tk",
      "links": [
        [
          "clack valve",
          "clack valve"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A person's tongue or mouth."
      ],
      "id": "en-clack_box-en-noun-aQUkQ9SQ",
      "links": [
        [
          "tongue",
          "tongue"
        ],
        [
          "mouth",
          "mouth"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) A person's tongue or mouth."
      ],
      "tags": [
        "UK",
        "obsolete",
        "slang"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A garrulous person; a chatterbox."
      ],
      "id": "en-clack_box-en-noun-S7lZ~kbP",
      "links": [
        [
          "garrulous",
          "garrulous"
        ],
        [
          "chatterbox",
          "chatterbox"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) A garrulous person; a chatterbox."
      ],
      "tags": [
        "UK",
        "obsolete",
        "slang"
      ]
    }
  ],
  "word": "clack box"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "clack boxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "clack box (plural clack boxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1946 March and April, “The Why and The Wherefore: Clack-Boxes”, in Railway Magazine, page 129",
          "text": "The connecting pipe between a locomotive injector and the boiler, through which the water is forced into the boiler against the steam pressure within, is provided with a \"clack-valve,\" which allows the water to pass in the inward direction only and not the outward; this is housed in a \"clack-box\". No question of \"advantages or disadvantages\" attaches to the use of a clack-box; it is a necessary part of locomotive equipment.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The box or chamber in which a clack valve works."
      ],
      "links": [
        [
          "clack valve",
          "clack valve"
        ]
      ]
    },
    {
      "categories": [
        "British English",
        "English slang",
        "English terms with obsolete senses"
      ],
      "glosses": [
        "A person's tongue or mouth."
      ],
      "links": [
        [
          "tongue",
          "tongue"
        ],
        [
          "mouth",
          "mouth"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) A person's tongue or mouth."
      ],
      "tags": [
        "UK",
        "obsolete",
        "slang"
      ]
    },
    {
      "categories": [
        "British English",
        "English slang",
        "English terms with obsolete senses"
      ],
      "glosses": [
        "A garrulous person; a chatterbox."
      ],
      "links": [
        [
          "garrulous",
          "garrulous"
        ],
        [
          "chatterbox",
          "chatterbox"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) A garrulous person; a chatterbox."
      ],
      "tags": [
        "UK",
        "obsolete",
        "slang"
      ]
    }
  ],
  "word": "clack box"
}