"ei" meaning in Latvian

{
  "head_templates": [
    {
      "args": {
        "1": "lv",
        "2": "interjection"
      },
      "expansion": "ei",
      "name": "head"
    }
  ],
  "lang": "Latvian",
  "lang_code": "lv",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "55 45",
          "kind": "other",
          "name": "Latvian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "used to stimulate somebody's attention"
      ],
      "id": "en-ei-lv-intj-HQ-gENSx"
    },
    {
      "glosses": [
        "used to express pleasure, surprise or admiration"
      ],
      "id": "en-ei-lv-intj-BqJ6IGuf"
    }
  ],
  "word": "ei"
}

{
  "categories": [
    "Latvian entries with incorrect language header",
    "Latvian interjections",
    "Latvian lemmas"
  ],
  "head_templates": [
    {
      "args": {
        "1": "lv",
        "2": "interjection"
      },
      "expansion": "ei",
      "name": "head"
    }
  ],
  "lang": "Latvian",
  "lang_code": "lv",
  "pos": "intj",
  "senses": [
    {
      "glosses": [
        "used to stimulate somebody's attention"
      ]
    },
    {
      "glosses": [
        "used to express pleasure, surprise or admiration"
      ]
    }
  ],
  "word": "ei"
}