"food swamp" meaning in English

{
  "etymology_text": "Coined in a research paper published in 2009.",
  "forms": [
    {
      "form": "food swamps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "food swamp (plural food swamps)",
      "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"
        }
      ],
      "coordinate_terms": [
        {
          "word": "food desert"
        },
        {
          "word": "food oasis"
        }
      ],
      "glosses": [
        "An urban environment with few grocery stores but several nonnutritious food options such as corner stores or fast-food restaurants."
      ],
      "id": "en-food_swamp-en-noun-l5~F8RNn",
      "links": [
        [
          "urban",
          "urban"
        ],
        [
          "environment",
          "environment"
        ],
        [
          "grocery store",
          "grocery store"
        ],
        [
          "nonnutritious",
          "nonnutritious"
        ],
        [
          "corner store",
          "corner store"
        ],
        [
          "fast-food",
          "fast-food"
        ],
        [
          "restaurant",
          "restaurant"
        ]
      ]
    }
  ],
  "word": "food swamp"
}

{
  "coordinate_terms": [
    {
      "word": "food desert"
    },
    {
      "word": "food oasis"
    }
  ],
  "etymology_text": "Coined in a research paper published in 2009.",
  "forms": [
    {
      "form": "food swamps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "food swamp (plural food swamps)",
      "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": [
        "An urban environment with few grocery stores but several nonnutritious food options such as corner stores or fast-food restaurants."
      ],
      "links": [
        [
          "urban",
          "urban"
        ],
        [
          "environment",
          "environment"
        ],
        [
          "grocery store",
          "grocery store"
        ],
        [
          "nonnutritious",
          "nonnutritious"
        ],
        [
          "corner store",
          "corner store"
        ],
        [
          "fast-food",
          "fast-food"
        ],
        [
          "restaurant",
          "restaurant"
        ]
      ]
    }
  ],
  "word": "food swamp"
}