"blue vervain" meaning in English

{
  "forms": [
    {
      "form": "blue vervains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "blue vervain (countable and uncountable, plural blue vervains)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "58 42",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The plant Verbena hastata, native to North America."
      ],
      "id": "en-blue_vervain-en-noun-aVD3Ys5M",
      "tags": [
        "countable",
        "uncountable"
      ]
    },
    {
      "glosses": [
        "The plant Verbena officinalis, native to Europe."
      ],
      "id": "en-blue_vervain-en-noun-2eXz-ROG",
      "links": [
        [
          "Verbena officinalis",
          "Verbena officinalis#Translingual"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "blue vervain"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English uncountable nouns"
  ],
  "forms": [
    {
      "form": "blue vervains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "blue vervain (countable and uncountable, plural blue vervains)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Entries using missing taxonomic name (species)"
      ],
      "glosses": [
        "The plant Verbena hastata, native to North America."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    },
    {
      "glosses": [
        "The plant Verbena officinalis, native to Europe."
      ],
      "links": [
        [
          "Verbena officinalis",
          "Verbena officinalis#Translingual"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "blue vervain"
}