"undercliff" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "cliff"
      },
      "expansion": "under- + cliff",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + cliff",
  "forms": [
    {
      "form": "undercliffs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undercliff (plural undercliffs)",
      "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": "English terms prefixed with under-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "Landforms",
          "orig": "en:Landforms",
          "parents": [
            "Earth",
            "Places",
            "Nature",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A subordinate cliff on a shore, consisting of material that has fallen from the higher cliff above."
      ],
      "id": "en-undercliff-en-noun-Or8e~f9v",
      "links": [
        [
          "subordinate",
          "subordinate"
        ],
        [
          "cliff",
          "cliff"
        ],
        [
          "shore",
          "shore"
        ],
        [
          "material",
          "material"
        ]
      ],
      "related": [
        {
          "word": "The Undercliff"
        }
      ]
    }
  ],
  "word": "undercliff"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "cliff"
      },
      "expansion": "under- + cliff",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + cliff",
  "forms": [
    {
      "form": "undercliffs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undercliff (plural undercliffs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "The Undercliff"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with under-",
        "en:Landforms"
      ],
      "glosses": [
        "A subordinate cliff on a shore, consisting of material that has fallen from the higher cliff above."
      ],
      "links": [
        [
          "subordinate",
          "subordinate"
        ],
        [
          "cliff",
          "cliff"
        ],
        [
          "shore",
          "shore"
        ],
        [
          "material",
          "material"
        ]
      ]
    }
  ],
  "word": "undercliff"
}