"deep-level" meaning in All languages combined

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "deep-level (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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"
        }
      ],
      "examples": [
        {
          "ref": "2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, →ISBN, page 86:",
          "text": "The deep-level Tubes required the invention of a tunnelling machine and a means of propelling trains through those tunnels that would not choke the passengers. The answer to the latter was electricity, and we have seen how electric traction had become established by the late nineteenth century.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Built or occurring underground at a relatively deep level."
      ],
      "id": "en-deep-level-en-adj-5T5UPMWY",
      "links": [
        [
          "underground",
          "underground"
        ]
      ],
      "related": [
        {
          "word": "high-level"
        },
        {
          "word": "low-level"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "deep-level"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "deep-level (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "high-level"
    },
    {
      "word": "low-level"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, →ISBN, page 86:",
          "text": "The deep-level Tubes required the invention of a tunnelling machine and a means of propelling trains through those tunnels that would not choke the passengers. The answer to the latter was electricity, and we have seen how electric traction had become established by the late nineteenth century.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Built or occurring underground at a relatively deep level."
      ],
      "links": [
        [
          "underground",
          "underground"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "deep-level"
}