"ptilo-" meaning in English

{
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        "3": "πτῐ́λον",
        "4": "",
        "5": "feather”, “down"
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      "expansion": "Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”)",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "-ptile"
      },
      "expansion": "English -ptile",
      "name": "cog"
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    {
      "args": {
        "1": "fr",
        "2": "ptil-"
      },
      "expansion": "French ptil-",
      "name": "cog"
    },
    {
      "args": {
        "1": "NL.",
        "2": "ptilo-"
      },
      "expansion": "New Latin ptilo-",
      "name": "cog"
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  ],
  "etymology_text": "Representing the Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”). Compare the English -ptile, the French ptil-, and the New Latin ptilo-.",
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    {
      "args": {},
      "expansion": "ptilo-",
      "name": "en-prefix"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
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        }
      ],
      "examples": [
        {
          "text": "ptilogenesis, ptilolite, ptilopaedic"
        }
      ],
      "glosses": [
        "down, feather; also, more loosely, downy, feathery, penniform, plumiform"
      ],
      "id": "en-ptilo--en-prefix-hXSaBYU9",
      "links": [
        [
          "down",
          "down#English"
        ],
        [
          "feather",
          "feather#English"
        ],
        [
          "downy",
          "downy#English"
        ],
        [
          "feathery",
          "feathery#English"
        ],
        [
          "penniform",
          "penniform#English"
        ],
        [
          "plumiform",
          "plumiform#English"
        ]
      ],
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      "translations": [
        {
          "code": "la",
          "lang": "Latin",
          "sense": "down, feather",
          "tags": [
            "New-Latin"
          ],
          "word": "ptilo-"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "downy, feathery, penniform, plumiform",
          "word": "ptil-"
        }
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      "ipa": "/(p)taɪləʊ/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/(p)tɪləʊ/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/(p)tʌɪləʊ/",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "ptilo-"
}

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    {
      "args": {
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        "3": "πτῐ́λον",
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        "5": "feather”, “down"
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      "expansion": "Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”)",
      "name": "der"
    },
    {
      "args": {
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        "2": "-ptile"
      },
      "expansion": "English -ptile",
      "name": "cog"
    },
    {
      "args": {
        "1": "fr",
        "2": "ptil-"
      },
      "expansion": "French ptil-",
      "name": "cog"
    },
    {
      "args": {
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        "2": "ptilo-"
      },
      "expansion": "New Latin ptilo-",
      "name": "cog"
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  ],
  "etymology_text": "Representing the Ancient Greek πτῐ́λον (ptĭ́lon, “feather”, “down”). Compare the English -ptile, the French ptil-, and the New Latin ptilo-.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
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        "Terms with Latin translations"
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        {
          "text": "ptilogenesis, ptilolite, ptilopaedic"
        }
      ],
      "glosses": [
        "down, feather; also, more loosely, downy, feathery, penniform, plumiform"
      ],
      "links": [
        [
          "down",
          "down#English"
        ],
        [
          "feather",
          "feather#English"
        ],
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          "downy",
          "downy#English"
        ],
        [
          "feathery",
          "feathery#English"
        ],
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          "penniform",
          "penniform#English"
        ],
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          "plumiform",
          "plumiform#English"
        ]
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    },
    {
      "ipa": "/(p)taɪləʊ/",
      "tags": [
        "Received-Pronunciation"
      ]
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      "ipa": "/(p)tɪləʊ/",
      "tags": [
        "UK"
      ]
    },
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      "ipa": "/(p)tʌɪləʊ/",
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        "UK"
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  "translations": [
    {
      "code": "la",
      "lang": "Latin",
      "sense": "down, feather",
      "tags": [
        "New-Latin"
      ],
      "word": "ptilo-"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "downy, feathery, penniform, plumiform",
      "word": "ptil-"
    }
  ],
  "word": "ptilo-"
}