"sa" meaning in Norwegian Bokmål

{
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages using lite templates",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "si"
        }
      ],
      "glosses": [
        "simple past of si"
      ],
      "id": "en-sa-nb-verb-sADTCvBO",
      "links": [
        [
          "si",
          "si#Norwegian Bokmål"
        ]
      ],
      "tags": [
        "form-of",
        "past"
      ]
    }
  ],
  "word": "sa"
}

{
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Norwegian Bokmål non-lemma forms",
        "Norwegian Bokmål verb forms",
        "Pages using lite templates"
      ],
      "form_of": [
        {
          "word": "si"
        }
      ],
      "glosses": [
        "simple past of si"
      ],
      "links": [
        [
          "si",
          "si#Norwegian Bokmål"
        ]
      ],
      "tags": [
        "form-of",
        "past"
      ]
    }
  ],
  "word": "sa"
}