"Duchenne smile" meaning in English

{
  "etymology_text": "After the French physician Duchenne de Boulogne (1806-1875).",
  "forms": [
    {
      "form": "Duchenne smiles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Duchenne smile (plural Duchenne smiles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A smile involving contraction of both the zygomatic major muscle (which raises the corners of the mouth) and the orbicularis oculi (which raises the cheeks and forms crow's feet around the eyes)."
      ],
      "id": "en-Duchenne_smile-en-noun-CX2p8Yio",
      "links": [
        [
          "smile",
          "smile"
        ],
        [
          "contraction",
          "contraction"
        ],
        [
          "zygomatic",
          "zygomatic"
        ],
        [
          "orbicularis oculi",
          "orbicularis oculi"
        ],
        [
          "crow's feet",
          "crow's feet"
        ]
      ],
      "wikipedia": [
        "Duchenne de Boulogne",
        "Duchenne smile"
      ]
    }
  ],
  "word": "Duchenne smile"
}

{
  "etymology_text": "After the French physician Duchenne de Boulogne (1806-1875).",
  "forms": [
    {
      "form": "Duchenne smiles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Duchenne smile (plural Duchenne smiles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A smile involving contraction of both the zygomatic major muscle (which raises the corners of the mouth) and the orbicularis oculi (which raises the cheeks and forms crow's feet around the eyes)."
      ],
      "links": [
        [
          "smile",
          "smile"
        ],
        [
          "contraction",
          "contraction"
        ],
        [
          "zygomatic",
          "zygomatic"
        ],
        [
          "orbicularis oculi",
          "orbicularis oculi"
        ],
        [
          "crow's feet",
          "crow's feet"
        ]
      ],
      "wikipedia": [
        "Duchenne de Boulogne",
        "Duchenne smile"
      ]
    }
  ],
  "word": "Duchenne smile"
}