"eye of newt" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Mustard seed (seed of the mustard plant)."
      ],
      "id": "en-eye_of_newt-en-noun-NROtK-uW",
      "links": [
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          "Mustard seed",
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      "raw_glosses": [
        "(obsolete) Mustard seed (seed of the mustard plant)."
      ],
      "tags": [
        "obsolete"
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    }
  ],
  "word": "eye of newt"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Mustard seed (seed of the mustard plant)."
      ],
      "links": [
        [
          "Mustard seed",
          "mustard seed#English"
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      "raw_glosses": [
        "(obsolete) Mustard seed (seed of the mustard plant)."
      ],
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        "obsolete"
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    }
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  "word": "eye of newt"
}