"enkephalin" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "ἐγκέφαλος",
        "4": "",
        "5": "brain"
      },
      "expansion": "Ancient Greek ἐγκέφαλος (enképhalos, “brain”)",
      "name": "uder"
    },
    {
      "args": {
        "1": "en",
        "2": "",
        "3": "in"
      },
      "expansion": "+ -in",
      "name": "suffix"
    }
  ],
  "etymology_text": "From Ancient Greek ἐγκέφαλος (enképhalos, “brain”) + -in.",
  "forms": [
    {
      "form": "enkephalins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "enkephalin (plural enkephalins)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "parents": [],
          "source": "w"
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          "source": "w"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Biochemistry",
          "orig": "en:Biochemistry",
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            "Biology",
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "met-enkephalin"
        }
      ],
      "glosses": [
        "Any of a group of pentapeptide endorphins that have opiate-like effects"
      ],
      "id": "en-enkephalin-en-noun-K03ORy1G",
      "links": [
        [
          "biochemistry",
          "biochemistry"
        ],
        [
          "pentapeptide",
          "pentapeptide"
        ],
        [
          "endorphin",
          "endorphin"
        ],
        [
          "opiate",
          "opiate"
        ]
      ],
      "raw_glosses": [
        "(biochemistry) Any of a group of pentapeptide endorphins that have opiate-like effects"
      ],
      "topics": [
        "biochemistry",
        "biology",
        "chemistry",
        "microbiology",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "word": "enképhaline"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "encefalina"
        }
      ],
      "wikipedia": [
        "enkephalin"
      ]
    }
  ],
  "word": "enkephalin"
}

{
  "derived": [
    {
      "word": "met-enkephalin"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
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        "4": "",
        "5": "brain"
      },
      "expansion": "Ancient Greek ἐγκέφαλος (enképhalos, “brain”)",
      "name": "uder"
    },
    {
      "args": {
        "1": "en",
        "2": "",
        "3": "in"
      },
      "expansion": "+ -in",
      "name": "suffix"
    }
  ],
  "etymology_text": "From Ancient Greek ἐγκέφαλος (enképhalos, “brain”) + -in.",
  "forms": [
    {
      "form": "enkephalins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
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  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English entries with incorrect language header",
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        "English undefined derivations",
        "Translation table header lacks gloss",
        "en:Biochemistry"
      ],
      "glosses": [
        "Any of a group of pentapeptide endorphins that have opiate-like effects"
      ],
      "links": [
        [
          "biochemistry",
          "biochemistry"
        ],
        [
          "pentapeptide",
          "pentapeptide"
        ],
        [
          "endorphin",
          "endorphin"
        ],
        [
          "opiate",
          "opiate"
        ]
      ],
      "raw_glosses": [
        "(biochemistry) Any of a group of pentapeptide endorphins that have opiate-like effects"
      ],
      "topics": [
        "biochemistry",
        "biology",
        "chemistry",
        "microbiology",
        "natural-sciences",
        "physical-sciences"
      ],
      "wikipedia": [
        "enkephalin"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "word": "enképhaline"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "encefalina"
    }
  ],
  "word": "enkephalin"
}