"PIV" meaning in Esperanto

{
  "forms": [
    {
      "form": "PIV-on",
      "tags": [
        "accusative"
      ]
    },
    {
      "form": "PIV",
      "tags": [
        "accusative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "eo",
        "2": "proper noun",
        "3": "accusative",
        "4": "PIV-on",
        "5": "or",
        "6": "PIV"
      },
      "expansion": "PIV (accusative PIV-on or PIV)",
      "name": "head"
    }
  ],
  "hyphenation": [
    "PIV"
  ],
  "hyphenations": [
    {
      "parts": [
        "PIV"
      ]
    }
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "an Esperanto dictionary",
          "word": "Plena Ilustrita Vortaro de Esperanto"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto entries with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using etymon with no ID",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "eo",
          "name": "Lexicography",
          "orig": "eo:Lexicography",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "ne-PIV-a"
        }
      ],
      "glosses": [
        "acronym of Plena Ilustrita Vortaro de Esperanto, an Esperanto dictionary"
      ],
      "id": "en-PIV-eo-name-M6sNBBYj",
      "links": [
        [
          "Plena",
          "plena#Esperanto"
        ],
        [
          "Ilustrita",
          "ilustrita#Esperanto"
        ],
        [
          "Vortaro",
          "vortaro#Esperanto"
        ],
        [
          "Esperanto",
          "Esperanto#Esperanto"
        ]
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/piv/"
    },
    {
      "rhymes": "-iv"
    }
  ],
  "word": "PIV"
}

{
  "derived": [
    {
      "word": "ne-PIV-a"
    }
  ],
  "forms": [
    {
      "form": "PIV-on",
      "tags": [
        "accusative"
      ]
    },
    {
      "form": "PIV",
      "tags": [
        "accusative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "eo",
        "2": "proper noun",
        "3": "accusative",
        "4": "PIV-on",
        "5": "or",
        "6": "PIV"
      },
      "expansion": "PIV (accusative PIV-on or PIV)",
      "name": "head"
    }
  ],
  "hyphenation": [
    "PIV"
  ],
  "hyphenations": [
    {
      "parts": [
        "PIV"
      ]
    }
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "an Esperanto dictionary",
          "word": "Plena Ilustrita Vortaro de Esperanto"
        }
      ],
      "categories": [
        "Esperanto 1-syllable words",
        "Esperanto acronyms",
        "Esperanto entries with etymon",
        "Esperanto entries with incorrect language header",
        "Esperanto lemmas",
        "Esperanto proper nouns",
        "Esperanto terms derived from Latin",
        "Esperanto terms derived from Proto-Indo-European",
        "Esperanto terms derived from Proto-Italic",
        "Esperanto terms derived from the Proto-Indo-European root *pleh₁-",
        "Esperanto terms derived from the Proto-Indo-European word *h₁én",
        "Esperanto terms with IPA pronunciation",
        "Esperanto terms with audio pronunciation",
        "Pages using etymon with no ID",
        "Pages with 2 entries",
        "Pages with entries",
        "Pages with etymon",
        "Rhymes:Esperanto/iv",
        "Rhymes:Esperanto/iv/1 syllable",
        "eo:Lexicography"
      ],
      "glosses": [
        "acronym of Plena Ilustrita Vortaro de Esperanto, an Esperanto dictionary"
      ],
      "links": [
        [
          "Plena",
          "plena#Esperanto"
        ],
        [
          "Ilustrita",
          "ilustrita#Esperanto"
        ],
        [
          "Vortaro",
          "vortaro#Esperanto"
        ],
        [
          "Esperanto",
          "Esperanto#Esperanto"
        ]
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/piv/"
    },
    {
      "rhymes": "-iv"
    }
  ],
  "word": "PIV"
}