"iron ring" meaning in English

{
  "etymology_text": "From being a finger ring made of wrought iron, traditionally explained as being extracted from the debris cleared from the collapse of the Quebec Bridge.",
  "forms": [
    {
      "form": "iron rings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "iron ring (plural iron rings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Engineering",
          "orig": "en:Engineering",
          "parents": [
            "Applied sciences",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "96 4",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "88 12",
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "92 8",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "94 6",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "87 13",
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The symbol of a Canadian engineer. A faceted stainless steel or iron ring worn on the little finger of the dominant hand, signifying a trained Canadian engineer, awarded in Canada after an accompanying oath of professional conduct, in a private ceremony with dramatic rites."
      ],
      "id": "en-iron_ring-en-noun-mv9k3Tz5",
      "links": [
        [
          "engineering",
          "engineering#Noun"
        ],
        [
          "little finger",
          "little finger"
        ]
      ],
      "raw_glosses": [
        "(Canada, engineering) The symbol of a Canadian engineer. A faceted stainless steel or iron ring worn on the little finger of the dominant hand, signifying a trained Canadian engineer, awarded in Canada after an accompanying oath of professional conduct, in a private ceremony with dramatic rites."
      ],
      "tags": [
        "Canada"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "_dis1": "94 6",
          "code": "fr",
          "lang": "French",
          "sense": "ring signifying a Canadian engineer",
          "word": "anneau de fer martelé"
        }
      ]
    },
    {
      "coordinate_terms": [
        {
          "_dis1": "42 58",
          "word": "astronaut wings"
        },
        {
          "_dis1": "42 58",
          "word": "pilot's wings"
        },
        {
          "_dis1": "42 58",
          "word": "ranger tab"
        },
        {
          "_dis1": "42 58",
          "english": "U.S. engineer's finger ring, modeled after the Canadian version",
          "word": "steel ring"
        }
      ],
      "glosses": [
        "Used other than figuratively or idiomatically: see iron, ring."
      ],
      "id": "en-iron_ring-en-noun-X0AH5oei",
      "links": [
        [
          "iron",
          "iron#English"
        ],
        [
          "ring",
          "ring#English"
        ]
      ]
    }
  ],
  "wikipedia": [
    "en:iron ring"
  ],
  "word": "iron ring"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Entries with translation boxes",
    "Pages with 2 entries",
    "Pages with entries",
    "Terms with French translations"
  ],
  "coordinate_terms": [
    {
      "word": "astronaut wings"
    },
    {
      "word": "pilot's wings"
    },
    {
      "word": "ranger tab"
    },
    {
      "english": "U.S. engineer's finger ring, modeled after the Canadian version",
      "word": "steel ring"
    }
  ],
  "etymology_text": "From being a finger ring made of wrought iron, traditionally explained as being extracted from the debris cleared from the collapse of the Quebec Bridge.",
  "forms": [
    {
      "form": "iron rings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "iron ring (plural iron rings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Canadian English",
        "en:Engineering"
      ],
      "glosses": [
        "The symbol of a Canadian engineer. A faceted stainless steel or iron ring worn on the little finger of the dominant hand, signifying a trained Canadian engineer, awarded in Canada after an accompanying oath of professional conduct, in a private ceremony with dramatic rites."
      ],
      "links": [
        [
          "engineering",
          "engineering#Noun"
        ],
        [
          "little finger",
          "little finger"
        ]
      ],
      "raw_glosses": [
        "(Canada, engineering) The symbol of a Canadian engineer. A faceted stainless steel or iron ring worn on the little finger of the dominant hand, signifying a trained Canadian engineer, awarded in Canada after an accompanying oath of professional conduct, in a private ceremony with dramatic rites."
      ],
      "tags": [
        "Canada"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "glosses": [
        "Used other than figuratively or idiomatically: see iron, ring."
      ],
      "links": [
        [
          "iron",
          "iron#English"
        ],
        [
          "ring",
          "ring#English"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "ring signifying a Canadian engineer",
      "word": "anneau de fer martelé"
    }
  ],
  "wikipedia": [
    "en:iron ring"
  ],
  "word": "iron ring"
}