"tower mustard" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "name": "Crucifers",
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            "Brassicales order plants",
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      "glosses": [
        "Turritis glabra (syn. Arabis glabra), a tall, slim, grey-green plant with small creamy flowers at the top of the stem."
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      "id": "en-tower_mustard-en-noun-ypsH9e32",
      "synonyms": [
        {
          "word": "tower rockcress"
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          "code": "ja",
          "lang": "Japanese",
          "roman": "hatasao",
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          "word": "旗竿"
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        "tower mustard"
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  "word": "tower mustard"
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  "lang_code": "en",
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        "tower mustard"
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  "synonyms": [
    {
      "word": "tower rockcress"
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  "word": "tower mustard"
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