"bideriva" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "bi",
        "3": "deriva"
      },
      "expansion": "bi- + deriva",
      "name": "prefix"
    }
  ],
  "etymology_text": "From bi- + deriva.",
  "head_templates": [
    {
      "args": {
        "inv": "1"
      },
      "expansion": "bideriva (invariable)",
      "name": "it-adj"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Italian terms prefixed with bi-",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "twin-tail (having two vertical fins) (of an aircraft's tailplane)"
      ],
      "id": "en-bideriva-it-adj-kvi8wQ16",
      "links": [
        [
          "twin",
          "twin"
        ],
        [
          "tail",
          "tail"
        ]
      ],
      "related": [
        {
          "word": "monoderiva"
        }
      ],
      "tags": [
        "invariable"
      ]
    }
  ],
  "word": "bideriva"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "bi",
        "3": "deriva"
      },
      "expansion": "bi- + deriva",
      "name": "prefix"
    }
  ],
  "etymology_text": "From bi- + deriva.",
  "head_templates": [
    {
      "args": {
        "inv": "1"
      },
      "expansion": "bideriva (invariable)",
      "name": "it-adj"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "related": [
    {
      "word": "monoderiva"
    }
  ],
  "senses": [
    {
      "categories": [
        "Italian adjectives",
        "Italian entries with incorrect language header",
        "Italian indeclinable adjectives",
        "Italian lemmas",
        "Italian terms prefixed with bi-"
      ],
      "glosses": [
        "twin-tail (having two vertical fins) (of an aircraft's tailplane)"
      ],
      "links": [
        [
          "twin",
          "twin"
        ],
        [
          "tail",
          "tail"
        ]
      ],
      "tags": [
        "invariable"
      ]
    }
  ],
  "word": "bideriva"
}