"Waterloo blue" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "Waterloo blue",
      "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"
        }
      ],
      "glosses": [
        "A bright medium blue colour."
      ],
      "id": "en-Waterloo_blue-en-noun-6T25iTsd",
      "links": [
        [
          "bright",
          "bright"
        ],
        [
          "medium",
          "medium"
        ],
        [
          "blue",
          "blue"
        ]
      ]
    }
  ],
  "word": "Waterloo blue"
}

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "Waterloo blue",
      "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 nouns with unknown or uncertain plurals"
      ],
      "glosses": [
        "A bright medium blue colour."
      ],
      "links": [
        [
          "bright",
          "bright"
        ],
        [
          "medium",
          "medium"
        ],
        [
          "blue",
          "blue"
        ]
      ]
    }
  ],
  "word": "Waterloo blue"
}