"ptilo-" meaning in Latin

{
  "etymology_templates": [
    {
      "args": {
        "1": "la",
        "2": "grc",
        "3": "πτῐ́λον",
        "4": "",
        "5": "feather”, “down"
      },
      "expansion": "Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”)",
      "name": "der"
    }
  ],
  "etymology_text": "Representing the Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”).",
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "prefix"
      },
      "expansion": "ptilo-",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Entries with collapsible category trees for nonexistent categories",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "New Latin",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Ptilocercus, Ptilopaedēs"
        }
      ],
      "glosses": [
        "ptilo- (down, feather)"
      ],
      "id": "en-ptilo--la-prefix-~HJa6w2F",
      "links": [
        [
          "ptilo-",
          "ptilo-#English"
        ]
      ],
      "raw_glosses": [
        "(New Latin) ptilo- (down, feather)"
      ],
      "related": [
        {
          "tags": [
            "New-Latin"
          ],
          "word": "ptilīnum"
        },
        {
          "tags": [
            "New-Latin"
          ],
          "word": "ptilōsis"
        }
      ],
      "tags": [
        "New-Latin",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pti.lo/",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "[pt̪ɪɫ̪ɔ]",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "/pti.lo/",
      "note": "modern Italianate Ecclesiastical"
    },
    {
      "ipa": "[pt̪ilo]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "ptilo-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "la",
        "2": "grc",
        "3": "πτῐ́λον",
        "4": "",
        "5": "feather”, “down"
      },
      "expansion": "Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”)",
      "name": "der"
    }
  ],
  "etymology_text": "Representing the Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”).",
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "prefix"
      },
      "expansion": "ptilo-",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "prefix",
  "related": [
    {
      "tags": [
        "New-Latin"
      ],
      "word": "ptilīnum"
    },
    {
      "tags": [
        "New-Latin"
      ],
      "word": "ptilōsis"
    }
  ],
  "senses": [
    {
      "categories": [
        "Entries with collapsible category trees for nonexistent categories",
        "Latin 2-syllable words",
        "Latin entries with incorrect language header",
        "Latin lemmas",
        "Latin prefixes",
        "Latin terms derived from Ancient Greek",
        "Latin terms with IPA pronunciation",
        "New Latin",
        "Pages using catfix",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "Ptilocercus, Ptilopaedēs"
        }
      ],
      "glosses": [
        "ptilo- (down, feather)"
      ],
      "links": [
        [
          "ptilo-",
          "ptilo-#English"
        ]
      ],
      "raw_glosses": [
        "(New Latin) ptilo- (down, feather)"
      ],
      "tags": [
        "New-Latin",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pti.lo/",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "[pt̪ɪɫ̪ɔ]",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "/pti.lo/",
      "note": "modern Italianate Ecclesiastical"
    },
    {
      "ipa": "[pt̪ilo]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "ptilo-"
}