"-svæfur" meaning in Icelandic

{
  "etymology_text": "Compare the Icelandic verbs sofa (“sleep”) and svæfa (“put to sleep”).",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "suffix"
      },
      "expansion": "-svæfur",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic 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": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "fastsvæfur"
        },
        {
          "word": "kvöldsvæfur"
        },
        {
          "word": "langsvæfur"
        },
        {
          "word": "laussvæfur"
        },
        {
          "word": "léttsvæfur"
        },
        {
          "word": "morgunsvæfur"
        },
        {
          "word": "þungsvæfur"
        }
      ],
      "glosses": [
        "a suffix related to sleep"
      ],
      "id": "en--svæfur-is-suffix-M2hW9I08",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-svæfur"
}

{
  "derived": [
    {
      "word": "fastsvæfur"
    },
    {
      "word": "kvöldsvæfur"
    },
    {
      "word": "langsvæfur"
    },
    {
      "word": "laussvæfur"
    },
    {
      "word": "léttsvæfur"
    },
    {
      "word": "morgunsvæfur"
    },
    {
      "word": "þungsvæfur"
    }
  ],
  "etymology_text": "Compare the Icelandic verbs sofa (“sleep”) and svæfa (“put to sleep”).",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "suffix"
      },
      "expansion": "-svæfur",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Icelandic entries with incorrect language header",
        "Icelandic lemmas",
        "Icelandic suffixes",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "a suffix related to sleep"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-svæfur"
}