"pinna" meaning in Italian

{
  "forms": [
    {
      "form": "pinne",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "pinna f (plural pinne)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "pìn‧na"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "fin"
      ],
      "id": "en-pinna-it-noun-o4O8t3yD",
      "links": [
        [
          "fin",
          "fin"
        ]
      ],
      "tags": [
        "feminine"
      ]
    },
    {
      "categories": [
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "30 70",
          "kind": "topical",
          "langcode": "it",
          "name": "Zoology",
          "orig": "it:Zoology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "flipper"
      ],
      "id": "en-pinna-it-noun-HCLyasTU",
      "links": [
        [
          "flipper",
          "flipper"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpin.na/"
    },
    {
      "rhymes": "-inna"
    }
  ],
  "word": "pinna"
}

{
  "categories": [
    "Italian 2-syllable words",
    "Italian countable nouns",
    "Italian entries with incorrect language header",
    "Italian feminine nouns",
    "Italian lemmas",
    "Italian nouns",
    "Italian terms with IPA pronunciation",
    "Pages with 7 entries",
    "Pages with entries",
    "Rhymes:Italian/inna",
    "Rhymes:Italian/inna/2 syllables",
    "it:Zoology"
  ],
  "forms": [
    {
      "form": "pinne",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "pinna f (plural pinne)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "pìn‧na"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "fin"
      ],
      "links": [
        [
          "fin",
          "fin"
        ]
      ],
      "tags": [
        "feminine"
      ]
    },
    {
      "glosses": [
        "flipper"
      ],
      "links": [
        [
          "flipper",
          "flipper"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpin.na/"
    },
    {
      "rhymes": "-inna"
    }
  ],
  "word": "pinna"
}