"ola" meaning in Portuguese

{
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "es",
        "3": "ola"
      },
      "expansion": "Spanish ola",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from Spanish ola.",
  "forms": [
    {
      "form": "olas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "ola f (plural olas)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 24 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "wave (a group activity in a crowd imitating a wave going through water, where people in successive parts of the crowd stand and stretch upward, then sit)"
      ],
      "id": "en-ola-pt-noun-IfWwGse~",
      "links": [
        [
          "wave",
          "wave"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈo.la/",
      "tags": [
        "Brazil"
      ]
    }
  ],
  "word": "ola"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "es",
        "3": "ola"
      },
      "expansion": "Spanish ola",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from Spanish ola.",
  "forms": [
    {
      "form": "olas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "ola f (plural olas)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 24 entries",
        "Pages with entries",
        "Portuguese countable nouns",
        "Portuguese entries with incorrect language header",
        "Portuguese feminine nouns",
        "Portuguese lemmas",
        "Portuguese nouns",
        "Portuguese terms borrowed from Spanish",
        "Portuguese terms derived from Spanish"
      ],
      "glosses": [
        "wave (a group activity in a crowd imitating a wave going through water, where people in successive parts of the crowd stand and stretch upward, then sit)"
      ],
      "links": [
        [
          "wave",
          "wave"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈo.la/",
      "tags": [
        "Brazil"
      ]
    }
  ],
  "word": "ola"
}