"tumble thistle" meaning in English

{
  "forms": [
    {
      "form": "tumble thistles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tumble thistle (plural tumble thistles)",
      "name": "en-noun"
    }
  ],
  "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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          "source": "w"
        },
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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Cichorieae tribe plants",
          "orig": "en:Cichorieae tribe plants",
          "parents": [
            "Composites",
            "Asterales order plants",
            "Plants",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
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          "source": "w"
        }
      ],
      "glosses": [
        "A thistle-like herb of genus Gundelia, especially species Gundelia tournefortii, native to the Middle East, the seedpods of which break off and disperse by tumbling across the ground."
      ],
      "id": "en-tumble_thistle-en-noun-2NBfqiwe",
      "links": [
        [
          "thistle",
          "thistle"
        ]
      ],
      "related": [
        {
          "word": "tumbleweed"
        }
      ]
    }
  ],
  "word": "tumble thistle"
}

{
  "forms": [
    {
      "form": "tumble thistles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tumble thistle (plural tumble thistles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "tumbleweed"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries using missing taxonomic name (genus)",
        "Entries using missing taxonomic name (species)",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Cichorieae tribe plants"
      ],
      "glosses": [
        "A thistle-like herb of genus Gundelia, especially species Gundelia tournefortii, native to the Middle East, the seedpods of which break off and disperse by tumbling across the ground."
      ],
      "links": [
        [
          "thistle",
          "thistle"
        ]
      ]
    }
  ],
  "word": "tumble thistle"
}