"pio" meaning in Esperanto

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "grc",
        "3": "πῖ",
        "pos": "the letter Π"
      },
      "expansion": "Ancient Greek πῖ (pî, the letter Π)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek πῖ (pî, the letter Π).",
  "forms": [
    {
      "form": "pion",
      "tags": [
        "accusative",
        "singular"
      ]
    },
    {
      "form": "pioj",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "piojn",
      "tags": [
        "accusative",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pio (accusative singular pion, plural pioj, accusative plural piojn)",
      "name": "eo-head"
    }
  ],
  "hyphenation": [
    "pi‧o"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "eo",
          "name": "Greek letter names",
          "orig": "eo:Greek letter names",
          "parents": [
            "Letter names",
            "Letters, symbols, and punctuation",
            "Names",
            "Orthography",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Writing",
            "Fundamental",
            "Nouns",
            "Human behaviour",
            "Language",
            "Lemmas",
            "Human",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "pi"
      ],
      "id": "en-pio-eo-noun-hbQuFwKH",
      "links": [
        [
          "pi",
          "pi"
        ]
      ],
      "wikipedia": [
        "eo:Pio (litero)"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈpio]"
    },
    {
      "rhymes": "-io"
    },
    {
      "audio": "LL-Q143 (epo)-Robin van der Vliet-pio.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav.ogg",
      "text": "Audio"
    }
  ],
  "word": "pio"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "grc",
        "3": "πῖ",
        "pos": "the letter Π"
      },
      "expansion": "Ancient Greek πῖ (pî, the letter Π)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek πῖ (pî, the letter Π).",
  "forms": [
    {
      "form": "pion",
      "tags": [
        "accusative",
        "singular"
      ]
    },
    {
      "form": "pioj",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "piojn",
      "tags": [
        "accusative",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pio (accusative singular pion, plural pioj, accusative plural piojn)",
      "name": "eo-head"
    }
  ],
  "hyphenation": [
    "pi‧o"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Esperanto entries with incorrect language header",
        "Esperanto entries with topic categories using raw markup",
        "Esperanto lemmas",
        "Esperanto nouns",
        "Esperanto terms derived from Ancient Greek",
        "Esperanto terms with IPA pronunciation",
        "Esperanto terms with audio links",
        "Rhymes:Esperanto/io",
        "eo:Greek letter names"
      ],
      "glosses": [
        "pi"
      ],
      "links": [
        [
          "pi",
          "pi"
        ]
      ],
      "wikipedia": [
        "eo:Pio (litero)"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈpio]"
    },
    {
      "rhymes": "-io"
    },
    {
      "audio": "LL-Q143 (epo)-Robin van der Vliet-pio.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav/LL-Q143_%28epo%29-Robin_van_der_Vliet-pio.wav.ogg",
      "text": "Audio"
    }
  ],
  "word": "pio"
}