"ओ" meaning in Sanskrit

{
  "forms": [
    {
      "form": "o",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sa",
        "2": "interjection"
      },
      "expansion": "ओ • (o)",
      "name": "head"
    }
  ],
  "lang": "Sanskrit",
  "lang_code": "sa",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Sanskrit entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sanskrit entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sanskrit one-letter words",
          "parents": [
            "One-letter words",
            "1",
            "Character counts",
            "Terms by orthographic property",
            "Terms by lexical property"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "ow, ouch"
      ],
      "id": "en-ओ-sa-intj-vmJ6XhYE",
      "links": [
        [
          "ow",
          "ow"
        ],
        [
          "ouch",
          "ouch"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɐw/",
      "tags": [
        "Vedic"
      ]
    },
    {
      "ipa": "/oː/",
      "tags": [
        "Classical"
      ]
    }
  ],
  "word": "ओ"
}

{
  "forms": [
    {
      "form": "o",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sa",
        "2": "interjection"
      },
      "expansion": "ओ • (o)",
      "name": "head"
    }
  ],
  "lang": "Sanskrit",
  "lang_code": "sa",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Sanskrit entries with incorrect language header",
        "Sanskrit entries with language name categories using raw markup",
        "Sanskrit interjections",
        "Sanskrit lemmas",
        "Sanskrit one-letter words",
        "Sanskrit terms with IPA pronunciation"
      ],
      "glosses": [
        "ow, ouch"
      ],
      "links": [
        [
          "ow",
          "ow"
        ],
        [
          "ouch",
          "ouch"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɐw/",
      "tags": [
        "Vedic"
      ]
    },
    {
      "ipa": "/oː/",
      "tags": [
        "Classical"
      ]
    }
  ],
  "word": "ओ"
}