"Gērsmuun" meaning in North Frisian

{
  "head_templates": [
    {
      "args": {
        "1": "frr",
        "2": "noun",
        "g": "m"
      },
      "expansion": "Gērsmuun m",
      "name": "head"
    }
  ],
  "lang": "North Frisian",
  "lang_code": "frr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "North Frisian 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"
        },
        {
          "kind": "other",
          "name": "Sylt North Frisian",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "frr",
          "name": "Months",
          "orig": "frr:Months",
          "parents": [
            "Periodic occurrences",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of April"
      ],
      "id": "en-Gērsmuun-frr-noun-3EwxMJoa",
      "links": [
        [
          "April",
          "April#North_Frisian"
        ]
      ],
      "raw_glosses": [
        "(Sylt) Synonym of April"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "April"
        },
        {
          "tags": [
            "Mooring"
          ],
          "word": "gjarsmoune"
        }
      ],
      "tags": [
        "Sylt",
        "masculine"
      ]
    }
  ],
  "word": "Gērsmuun"
}

{
  "head_templates": [
    {
      "args": {
        "1": "frr",
        "2": "noun",
        "g": "m"
      },
      "expansion": "Gērsmuun m",
      "name": "head"
    }
  ],
  "lang": "North Frisian",
  "lang_code": "frr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "North Frisian entries with incorrect language header",
        "North Frisian lemmas",
        "North Frisian masculine nouns",
        "North Frisian nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "Sylt North Frisian",
        "frr:Months"
      ],
      "glosses": [
        "Synonym of April"
      ],
      "links": [
        [
          "April",
          "April#North_Frisian"
        ]
      ],
      "raw_glosses": [
        "(Sylt) Synonym of April"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "April"
        }
      ],
      "tags": [
        "Sylt",
        "masculine"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "Mooring"
      ],
      "word": "gjarsmoune"
    }
  ],
  "word": "Gērsmuun"
}