"aa" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "loanword",
        "2": "Borrowed"
      },
      "expansion": "Borrowed",
      "name": "glossary"
    },
    {
      "args": {
        "1": "it",
        "2": "haw",
        "3": "ʻaʻā",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Hawaiian ʻaʻā",
      "name": "bor"
    },
    {
      "args": {
        "1": "it",
        "2": "haw",
        "3": "ʻaʻā"
      },
      "expansion": "Borrowed from Hawaiian ʻaʻā",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Hawaiian ʻaʻā.",
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "#"
      },
      "expansion": "aa f (invariable)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "à‧a"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "it",
          "name": "Volcanology",
          "orig": "it:Volcanology",
          "parents": [
            "Geology",
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "aa (type of lava flow)"
      ],
      "id": "en-aa-it-noun-nkvpEBRv",
      "links": [
        [
          "volcanology",
          "volcanology"
        ],
        [
          "aa",
          "aa#English"
        ]
      ],
      "raw_glosses": [
        "(volcanology) aa (type of lava flow)"
      ],
      "synonyms": [
        {
          "word": "afrolite"
        }
      ],
      "tags": [
        "feminine",
        "invariable"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences",
        "volcanology"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈa.a/"
    },
    {
      "rhymes": "-aa"
    }
  ],
  "word": "aa"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "loanword",
        "2": "Borrowed"
      },
      "expansion": "Borrowed",
      "name": "glossary"
    },
    {
      "args": {
        "1": "it",
        "2": "haw",
        "3": "ʻaʻā",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Hawaiian ʻaʻā",
      "name": "bor"
    },
    {
      "args": {
        "1": "it",
        "2": "haw",
        "3": "ʻaʻā"
      },
      "expansion": "Borrowed from Hawaiian ʻaʻā",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Hawaiian ʻaʻā.",
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "#"
      },
      "expansion": "aa f (invariable)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "à‧a"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian 2-syllable words",
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian feminine nouns",
        "Italian indeclinable nouns",
        "Italian lemmas",
        "Italian nouns",
        "Italian terms borrowed from Hawaiian",
        "Italian terms derived from Hawaiian",
        "Italian terms with IPA pronunciation",
        "Rhymes:Italian/aa",
        "Rhymes:Italian/aa/2 syllables",
        "it:Volcanology"
      ],
      "glosses": [
        "aa (type of lava flow)"
      ],
      "links": [
        [
          "volcanology",
          "volcanology"
        ],
        [
          "aa",
          "aa#English"
        ]
      ],
      "raw_glosses": [
        "(volcanology) aa (type of lava flow)"
      ],
      "synonyms": [
        {
          "word": "afrolite"
        }
      ],
      "tags": [
        "feminine",
        "invariable"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences",
        "volcanology"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈa.a/"
    },
    {
      "rhymes": "-aa"
    }
  ],
  "word": "aa"
}