"waa" meaning in Garo

{
  "etymology_templates": [
    {
      "args": {
        "1": "grt",
        "2": "sit-pro",
        "3": "*k/r/s-wa"
      },
      "expansion": "Proto-Sino-Tibetan *k/r/s-wa",
      "name": "inh"
    }
  ],
  "etymology_text": "Ultimately from Proto-Sino-Tibetan *k/r/s-wa",
  "head_templates": [
    {
      "args": {
        "1": "grt",
        "2": "verb"
      },
      "expansion": "waa",
      "name": "head"
    }
  ],
  "lang": "Garo",
  "lang_code": "grt",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Garo entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Garo entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "grt",
          "name": "Weather",
          "orig": "grt:Weather",
          "parents": [
            "Atmosphere",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "to rain"
      ],
      "id": "en-waa-grt-verb-~P2WWppZ",
      "links": [
        [
          "rain",
          "rain"
        ]
      ],
      "related": [
        {
          "word": "mikka"
        }
      ],
      "tags": [
        "intransitive"
      ]
    }
  ],
  "word": "waa"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "grt",
        "2": "sit-pro",
        "3": "*k/r/s-wa"
      },
      "expansion": "Proto-Sino-Tibetan *k/r/s-wa",
      "name": "inh"
    }
  ],
  "etymology_text": "Ultimately from Proto-Sino-Tibetan *k/r/s-wa",
  "head_templates": [
    {
      "args": {
        "1": "grt",
        "2": "verb"
      },
      "expansion": "waa",
      "name": "head"
    }
  ],
  "lang": "Garo",
  "lang_code": "grt",
  "pos": "verb",
  "related": [
    {
      "word": "mikka"
    }
  ],
  "senses": [
    {
      "categories": [
        "Garo entries with incorrect language header",
        "Garo entries with topic categories using raw markup",
        "Garo lemmas",
        "Garo terms derived from Proto-Sino-Tibetan",
        "Garo terms inherited from Proto-Sino-Tibetan",
        "Garo verbs",
        "grt:Weather"
      ],
      "glosses": [
        "to rain"
      ],
      "links": [
        [
          "rain",
          "rain"
        ]
      ],
      "tags": [
        "intransitive"
      ]
    }
  ],
  "word": "waa"
}