"af" meaning in Swedish

{
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "preposition"
      },
      "expansion": "af",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "prep",
  "senses": [
    {
      "alt_of": [
        {
          "word": "av"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish prepositions",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Archaic spelling of av."
      ],
      "id": "en-af-sv-prep-w-4kUcEZ",
      "links": [
        [
          "av",
          "av#Swedish"
        ]
      ],
      "related": [
        {
          "word": "de"
        },
        {
          "word": "von"
        }
      ],
      "tags": [
        "alt-of",
        "archaic"
      ]
    }
  ],
  "word": "af"
}

{
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "preposition"
      },
      "expansion": "af",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "prep",
  "related": [
    {
      "word": "de"
    },
    {
      "word": "von"
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "av"
        }
      ],
      "categories": [
        "Swedish archaic forms",
        "Swedish entries with incorrect language header",
        "Swedish lemmas",
        "Swedish prepositions"
      ],
      "glosses": [
        "Archaic spelling of av."
      ],
      "links": [
        [
          "av",
          "av#Swedish"
        ]
      ],
      "tags": [
        "alt-of",
        "archaic"
      ]
    }
  ],
  "word": "af"
}