"rainbow herbicide" meaning in English

{
  "etymology_text": "From the colours assigned to them as code names.",
  "forms": [
    {
      "form": "rainbow herbicides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rainbow herbicide (plural rainbow herbicides)",
      "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": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Any of a group of herbicides used by the United States military in Southeast Asia during the Vietnam War, the best-known and mostly widely used being Agent Orange."
      ],
      "id": "en-rainbow_herbicide-en-noun-VVjg0Fq2",
      "links": [
        [
          "herbicide",
          "herbicide"
        ],
        [
          "United States",
          "United States"
        ],
        [
          "military",
          "military"
        ],
        [
          "Asia",
          "Asia"
        ],
        [
          "Agent Orange",
          "Agent Orange"
        ]
      ],
      "wikipedia": [
        "Rainbow Herbicides"
      ]
    }
  ],
  "word": "rainbow herbicide"
}

{
  "etymology_text": "From the colours assigned to them as code names.",
  "forms": [
    {
      "form": "rainbow herbicides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rainbow herbicide (plural rainbow herbicides)",
      "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",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Any of a group of herbicides used by the United States military in Southeast Asia during the Vietnam War, the best-known and mostly widely used being Agent Orange."
      ],
      "links": [
        [
          "herbicide",
          "herbicide"
        ],
        [
          "United States",
          "United States"
        ],
        [
          "military",
          "military"
        ],
        [
          "Asia",
          "Asia"
        ],
        [
          "Agent Orange",
          "Agent Orange"
        ]
      ],
      "wikipedia": [
        "Rainbow Herbicides"
      ]
    }
  ],
  "word": "rainbow herbicide"
}