"hardbottom" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hard",
        "3": "bottom"
      },
      "expansion": "hard + bottom",
      "name": "compound"
    }
  ],
  "etymology_text": "hard + bottom",
  "forms": [
    {
      "form": "hardbottoms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "hardbottom (countable and uncountable, plural hardbottoms)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "2015 July 9, “Identifying Suitable Locations for Mesophotic Hard Corals Offshore of Maui, Hawai‘i”, in PLOS ONE, →DOI",
          "text": "Measures of seafloor topographic complexity were used as a proxy for the availability of hardbottom, since a comprehensive map of hard and soft seafloor sediments was also not readily available.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A hard seafloor, typically a layer of sand covering rock."
      ],
      "id": "en-hardbottom-en-noun-KxMgNdJX",
      "links": [
        [
          "hard",
          "hard"
        ],
        [
          "seafloor",
          "seafloor"
        ]
      ],
      "related": [
        {
          "word": "softbottom"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "hardbottom"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hard",
        "3": "bottom"
      },
      "expansion": "hard + bottom",
      "name": "compound"
    }
  ],
  "etymology_text": "hard + bottom",
  "forms": [
    {
      "form": "hardbottoms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "hardbottom (countable and uncountable, plural hardbottoms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "softbottom"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "ref": "2015 July 9, “Identifying Suitable Locations for Mesophotic Hard Corals Offshore of Maui, Hawai‘i”, in PLOS ONE, →DOI",
          "text": "Measures of seafloor topographic complexity were used as a proxy for the availability of hardbottom, since a comprehensive map of hard and soft seafloor sediments was also not readily available.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A hard seafloor, typically a layer of sand covering rock."
      ],
      "links": [
        [
          "hard",
          "hard"
        ],
        [
          "seafloor",
          "seafloor"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "hardbottom"
}