"aga" meaning in Estonian

{
  "head_templates": [
    {
      "args": {
        "1": "et",
        "2": "conjunction"
      },
      "expansion": "aga",
      "name": "head"
    }
  ],
  "lang": "Estonian",
  "lang_code": "et",
  "pos": "conj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Estonian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 40 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "but"
      ],
      "id": "en-aga-et-conj-zcKZN4hx",
      "links": [
        [
          "but",
          "but"
        ]
      ],
      "synonyms": [
        {
          "word": "kuid"
        },
        {
          "word": "a"
        }
      ]
    }
  ],
  "word": "aga"
}

{
  "categories": [
    "Pages with 40 entries",
    "Pages with entries",
    "yo:Furniture",
    "yo:Mammals",
    "yo:Tools",
    "yo:Trees"
  ],
  "head_templates": [
    {
      "args": {
        "1": "et",
        "2": "conjunction"
      },
      "expansion": "aga",
      "name": "head"
    }
  ],
  "lang": "Estonian",
  "lang_code": "et",
  "pos": "conj",
  "senses": [
    {
      "categories": [
        "Estonian conjunctions",
        "Estonian entries with incorrect language header",
        "Estonian lemmas",
        "Estonian palindromes",
        "Pages with 40 entries",
        "Pages with entries"
      ],
      "glosses": [
        "but"
      ],
      "links": [
        [
          "but",
          "but"
        ]
      ],
      "synonyms": [
        {
          "word": "kuid"
        },
        {
          "word": "a"
        }
      ]
    }
  ],
  "word": "aga"
}