"sceng" meaning in Middle Irish

{
  "etymology_templates": [
    {
      "args": {
        "1": "mga",
        "2": "non",
        "3": "skinn"
      },
      "expansion": "Old Norse skinn",
      "name": "der"
    }
  ],
  "etymology_text": "Probably a variant of or back-formation from scing (“covering, garment”), from Old Norse skinn.",
  "head_templates": [
    {
      "args": {
        "1": "mga",
        "2": "noun"
      },
      "expansion": "sceng",
      "name": "head"
    }
  ],
  "lang": "Middle Irish",
  "lang_code": "mga",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Middle Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "bed"
      ],
      "id": "en-sceng-mga-noun-xQUlMsIg",
      "links": [
        [
          "bed",
          "bed"
        ]
      ],
      "raw_glosses": [
        "(rare) bed"
      ],
      "synonyms": [
        {
          "word": "dérgud"
        },
        {
          "word": "imdae"
        },
        {
          "word": "lepaid"
        },
        {
          "word": "lige"
        }
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɕkʲeŋ/"
    }
  ],
  "word": "sceng"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "mga",
        "2": "non",
        "3": "skinn"
      },
      "expansion": "Old Norse skinn",
      "name": "der"
    }
  ],
  "etymology_text": "Probably a variant of or back-formation from scing (“covering, garment”), from Old Norse skinn.",
  "head_templates": [
    {
      "args": {
        "1": "mga",
        "2": "noun"
      },
      "expansion": "sceng",
      "name": "head"
    }
  ],
  "lang": "Middle Irish",
  "lang_code": "mga",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Middle Irish entries with incorrect language header",
        "Middle Irish lemmas",
        "Middle Irish nouns",
        "Middle Irish rare terms",
        "Middle Irish terms derived from Old Norse",
        "Middle Irish terms with IPA pronunciation"
      ],
      "glosses": [
        "bed"
      ],
      "links": [
        [
          "bed",
          "bed"
        ]
      ],
      "raw_glosses": [
        "(rare) bed"
      ],
      "synonyms": [
        {
          "word": "dérgud"
        },
        {
          "word": "imdae"
        },
        {
          "word": "lepaid"
        },
        {
          "word": "lige"
        }
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɕkʲeŋ/"
    }
  ],
  "word": "sceng"
}