"rafter snapper" meaning in English

{
  "etymology_text": "Originates from the state of Maine, in which the planks and woodbeams of a residential dwelling make \"snapping\" sounds during very cold nights.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "rafter snapper",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Maine English",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A very cold night."
      ],
      "id": "en-rafter_snapper-en-noun-SCOPCEvz",
      "links": [
        [
          "cold",
          "cold"
        ],
        [
          "night",
          "night"
        ]
      ],
      "raw_glosses": [
        "(US, Maine, rare) A very cold night."
      ],
      "related": [
        {
          "word": "three-dog night"
        }
      ],
      "tags": [
        "Maine",
        "US",
        "rare"
      ]
    }
  ],
  "word": "rafter snapper"
}

{
  "etymology_text": "Originates from the state of Maine, in which the planks and woodbeams of a residential dwelling make \"snapping\" sounds during very cold nights.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "rafter snapper",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "three-dog night"
    }
  ],
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms with rare senses",
        "Maine English"
      ],
      "glosses": [
        "A very cold night."
      ],
      "links": [
        [
          "cold",
          "cold"
        ],
        [
          "night",
          "night"
        ]
      ],
      "raw_glosses": [
        "(US, Maine, rare) A very cold night."
      ],
      "tags": [
        "Maine",
        "US",
        "rare"
      ]
    }
  ],
  "word": "rafter snapper"
}