"spinach mustard" meaning in English

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      "expansion": "spinach mustard (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "kind": "lifeform",
          "langcode": "en",
          "name": "Brassicas",
          "orig": "en:Brassicas",
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      ],
      "glosses": [
        "Tatsoi (Brassica rapa subsp. narinosa or Brassica rapa var. rosularis)"
      ],
      "id": "en-spinach_mustard-en-noun-P528Xnsm",
      "links": [
        [
          "Tatsoi",
          "tatsoi"
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        [
          "Brassica rapa subsp. narinosa",
          "Brassica rapa subsp. narinosa#Translingual"
        ],
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          "Brassica rapa var. rosularis",
          "Brassica rapa var. rosularis#Translingual"
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      "synonyms": [
        {
          "word": "Chinese flat cabbage"
        },
        {
          "word": "rosette pakchoi"
        },
        {
          "word": "broadbeaked mustard"
        },
        {
          "word": "spoon mustard"
        }
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "spinach mustard"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "Tatsoi",
          "tatsoi"
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          "Brassica rapa subsp. narinosa",
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          "Brassica rapa var. rosularis",
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  "synonyms": [
    {
      "word": "Chinese flat cabbage"
    },
    {
      "word": "rosette pakchoi"
    },
    {
      "word": "broadbeaked mustard"
    },
    {
      "word": "spoon mustard"
    }
  ],
  "word": "spinach mustard"
}

{
  "called_from": "linkages/371",
  "msg": "unrecognized linkage prefix: (tatsoi): Chinese flat cabbage, rosette pakchoi, broadbeaked mustard, spoon mustard desc=tatsoi rest=Chinese flat cabbage, rosette pakchoi, broadbeaked mustard, spoon mustard cls=romanization cls2=romanization e1=True e2=False",
  "path": [
    "spinach mustard"
  ],
  "section": "English",
  "subsection": "noun",
  "title": "spinach mustard",
  "trace": ""
}