"sāku" meaning in Latvian

{
  "head_templates": [
    {
      "args": {
        "1": "lv",
        "2": "verb form"
      },
      "expansion": "sāku",
      "name": "head"
    }
  ],
  "lang": "Latvian",
  "lang_code": "lv",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latvian 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"
        }
      ],
      "glosses": [
        "first-person singular present/past indicative of sākt"
      ],
      "id": "en-sāku-lv-verb-eOQ0TZ7I",
      "links": [
        [
          "sākt",
          "sākt#Latvian"
        ]
      ]
    }
  ],
  "word": "sāku"
}

{
  "head_templates": [
    {
      "args": {
        "1": "lv",
        "2": "verb form"
      },
      "expansion": "sāku",
      "name": "head"
    }
  ],
  "lang": "Latvian",
  "lang_code": "lv",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Latvian entries with incorrect language header",
        "Latvian non-lemma forms",
        "Latvian verb forms",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "first-person singular present/past indicative of sākt"
      ],
      "links": [
        [
          "sākt",
          "sākt#Latvian"
        ]
      ]
    }
  ],
  "word": "sāku"
}