"cramp iron" meaning in English

{
  "forms": [
    {
      "form": "cramp irons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cramp iron (plural cramp irons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "84 16",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "87 13",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "93 7",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "An iron bar, bent at right angles at each end, used to hold masonry together"
      ],
      "id": "en-cramp_iron-en-noun-lzORBCJa",
      "links": [
        [
          "bar",
          "bar"
        ],
        [
          "right angle",
          "right angle"
        ],
        [
          "masonry",
          "masonry"
        ]
      ]
    },
    {
      "glosses": [
        "An arrangement of iron wedges inserted into a cavity to lift heavy stones; a lewis"
      ],
      "id": "en-cramp_iron-en-noun-iuU4mB7c",
      "links": [
        [
          "wedge",
          "wedge"
        ],
        [
          "cavity",
          "cavity"
        ],
        [
          "lewis",
          "lewis"
        ]
      ]
    }
  ],
  "word": "cramp iron"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "cramp irons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cramp iron (plural cramp irons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "An iron bar, bent at right angles at each end, used to hold masonry together"
      ],
      "links": [
        [
          "bar",
          "bar"
        ],
        [
          "right angle",
          "right angle"
        ],
        [
          "masonry",
          "masonry"
        ]
      ]
    },
    {
      "glosses": [
        "An arrangement of iron wedges inserted into a cavity to lift heavy stones; a lewis"
      ],
      "links": [
        [
          "wedge",
          "wedge"
        ],
        [
          "cavity",
          "cavity"
        ],
        [
          "lewis",
          "lewis"
        ]
      ]
    }
  ],
  "word": "cramp iron"
}