"Norwegian coupling" meaning in English

{
  "etymology_text": "It was developed in Norway about 1870.",
  "forms": [
    {
      "form": "Norwegian couplings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Norwegian coupling (plural Norwegian couplings)",
      "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": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A manually operated coupling at each end of some narrow-gauge railway rolling stock, consisting of a central buffer incorporating a hook that drops into a slot in the opposing central buffer."
      ],
      "id": "en-Norwegian_coupling-en-noun-s0jb~0dJ",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "narrow-gauge",
          "narrow gauge"
        ],
        [
          "railway",
          "railway"
        ],
        [
          "rolling stock",
          "rolling stock"
        ],
        [
          "central",
          "central"
        ],
        [
          "buffer",
          "buffer"
        ],
        [
          "hook",
          "hook"
        ],
        [
          "slot",
          "slot"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A manually operated coupling at each end of some narrow-gauge railway rolling stock, consisting of a central buffer incorporating a hook that drops into a slot in the opposing central buffer."
      ],
      "synonyms": [
        {
          "word": "chopper coupling"
        },
        {
          "word": "claw hammer coupling"
        }
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "Norwegian coupling"
}

{
  "etymology_text": "It was developed in Norway about 1870.",
  "forms": [
    {
      "form": "Norwegian couplings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Norwegian coupling (plural Norwegian couplings)",
      "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",
        "Pages with 1 entry",
        "en:Rail transportation"
      ],
      "glosses": [
        "A manually operated coupling at each end of some narrow-gauge railway rolling stock, consisting of a central buffer incorporating a hook that drops into a slot in the opposing central buffer."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "narrow-gauge",
          "narrow gauge"
        ],
        [
          "railway",
          "railway"
        ],
        [
          "rolling stock",
          "rolling stock"
        ],
        [
          "central",
          "central"
        ],
        [
          "buffer",
          "buffer"
        ],
        [
          "hook",
          "hook"
        ],
        [
          "slot",
          "slot"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A manually operated coupling at each end of some narrow-gauge railway rolling stock, consisting of a central buffer incorporating a hook that drops into a slot in the opposing central buffer."
      ],
      "synonyms": [
        {
          "word": "chopper coupling"
        },
        {
          "word": "claw hammer coupling"
        }
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "Norwegian coupling"
}