"árum" meaning in Portuguese

{
  "forms": [
    {
      "form": "áruns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "árum m (plural áruns)",
      "name": "pt-noun"
    }
  ],
  "hyphenation": [
    "á‧rum"
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "arum plant",
          "word": "aro"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 4 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": [
        "Alternative form of aro (arum plant)"
      ],
      "id": "en-árum-pt-noun--XntLZRi",
      "links": [
        [
          "aro",
          "aro#Portuguese"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈa.ɾũ/",
      "tags": [
        "Brazil"
      ]
    },
    {
      "ipa": "/ˈa.ɾũ/",
      "tags": [
        "Portugal"
      ]
    }
  ],
  "word": "árum"
}

{
  "forms": [
    {
      "form": "áruns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "árum m (plural áruns)",
      "name": "pt-noun"
    }
  ],
  "hyphenation": [
    "á‧rum"
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "arum plant",
          "word": "aro"
        }
      ],
      "categories": [
        "Pages with 4 entries",
        "Pages with entries",
        "Portuguese 2-syllable words",
        "Portuguese countable nouns",
        "Portuguese entries with incorrect language header",
        "Portuguese lemmas",
        "Portuguese masculine nouns",
        "Portuguese nouns",
        "Portuguese nouns with red links in their headword lines",
        "Portuguese terms with IPA pronunciation"
      ],
      "glosses": [
        "Alternative form of aro (arum plant)"
      ],
      "links": [
        [
          "aro",
          "aro#Portuguese"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈa.ɾũ/",
      "tags": [
        "Brazil"
      ]
    },
    {
      "ipa": "/ˈa.ɾũ/",
      "tags": [
        "Portugal"
      ]
    }
  ],
  "word": "árum"
}