"delfan" meaning in Middle English

{
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "verb"
      },
      "expansion": "delfan",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "word": "delven"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Early Middle English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Middle English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "62 32 6",
          "kind": "other",
          "name": "Old English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "85 9 6",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Alternative form of delven"
      ],
      "id": "en-delfan-enm-verb-emboq8l3",
      "links": [
        [
          "delven",
          "delven#Middle English"
        ]
      ],
      "raw_glosses": [
        "(Early Middle English) Alternative form of delven"
      ],
      "tags": [
        "Early-Middle-English",
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "delfan"
}

{
  "categories": [
    "Old English class 3 strong verbs",
    "Old English entries with incorrect language header",
    "Old English lemmas",
    "Old English terms derived from Proto-Germanic",
    "Old English terms derived from Proto-West Germanic",
    "Old English terms inherited from Proto-Germanic",
    "Old English terms inherited from Proto-West Germanic",
    "Old English terms with IPA pronunciation",
    "Old English terms with redundant head parameter",
    "Old English verbs",
    "Pages with 2 entries"
  ],
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "verb"
      },
      "expansion": "delfan",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "word": "delven"
        }
      ],
      "categories": [
        "Early Middle English",
        "Middle English entries with incorrect language header",
        "Middle English lemmas",
        "Middle English verbs",
        "Pages with 2 entries"
      ],
      "glosses": [
        "Alternative form of delven"
      ],
      "links": [
        [
          "delven",
          "delven#Middle English"
        ]
      ],
      "raw_glosses": [
        "(Early Middle English) Alternative form of delven"
      ],
      "tags": [
        "Early-Middle-English",
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "delfan"
}