"FS" meaning in Indonesian

{
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    {
      "args": {
        "1": "id",
        "2": "noun"
      },
      "expansion": "FS",
      "name": "head"
    }
  ],
  "lang": "Indonesian",
  "lang_code": "id",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fakultas sastra"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Indonesian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "id",
          "name": "Education",
          "orig": "id:Education",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of fakultas sastra."
      ],
      "id": "en-FS-id-noun-gPQzf7jc",
      "links": [
        [
          "education",
          "education"
        ],
        [
          "fakultas",
          "fakultas#Indonesian"
        ],
        [
          "sastra",
          "sastra#Indonesian"
        ]
      ],
      "raw_glosses": [
        "(education) Initialism of fakultas sastra."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "education"
      ]
    }
  ],
  "word": "FS"
}

{
  "head_templates": [
    {
      "args": {
        "1": "id",
        "2": "noun"
      },
      "expansion": "FS",
      "name": "head"
    }
  ],
  "lang": "Indonesian",
  "lang_code": "id",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fakultas sastra"
        }
      ],
      "categories": [
        "Indonesian entries with incorrect language header",
        "Indonesian initialisms",
        "Indonesian lemmas",
        "Indonesian nouns",
        "Pages with 3 entries",
        "id:Education"
      ],
      "glosses": [
        "Initialism of fakultas sastra."
      ],
      "links": [
        [
          "education",
          "education"
        ],
        [
          "fakultas",
          "fakultas#Indonesian"
        ],
        [
          "sastra",
          "sastra#Indonesian"
        ]
      ],
      "raw_glosses": [
        "(education) Initialism of fakultas sastra."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "education"
      ]
    }
  ],
  "word": "FS"
}