"giant reed" meaning in English

{
  "forms": [
    {
      "form": "giant reeds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "giant reed (countable and uncountable, plural giant reeds)",
      "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",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Grasses",
          "orig": "en:Grasses",
          "parents": [
            "Commelinids",
            "Plants",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Arundo donax, native to the Mediterranean."
      ],
      "id": "en-giant_reed-en-noun--HcOjw~2",
      "links": [
        [
          "Arundo donax",
          "Arundo donax#Translingual"
        ]
      ],
      "synonyms": [
        {
          "sense": "species",
          "word": "carrizo"
        },
        {
          "sense": "species",
          "word": "arundo"
        },
        {
          "sense": "species",
          "word": "Spanish cane"
        },
        {
          "sense": "species",
          "word": "Colorado river reed"
        },
        {
          "sense": "species",
          "word": "wild cane"
        },
        {
          "sense": "species",
          "word": "giant cane"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "giant reed"
}

{
  "forms": [
    {
      "form": "giant reeds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "giant reed (countable and uncountable, plural giant reeds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "en:Grasses"
      ],
      "glosses": [
        "Arundo donax, native to the Mediterranean."
      ],
      "links": [
        [
          "Arundo donax",
          "Arundo donax#Translingual"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "species",
      "word": "carrizo"
    },
    {
      "sense": "species",
      "word": "arundo"
    },
    {
      "sense": "species",
      "word": "Spanish cane"
    },
    {
      "sense": "species",
      "word": "Colorado river reed"
    },
    {
      "sense": "species",
      "word": "wild cane"
    },
    {
      "sense": "species",
      "word": "giant cane"
    }
  ],
  "word": "giant reed"
}