"headwall" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "head",
        "3": "wall"
      },
      "expansion": "head + wall",
      "name": "compound"
    }
  ],
  "etymology_text": "From head + wall.",
  "forms": [
    {
      "form": "headwalls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "headwall (plural headwalls)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geography",
          "orig": "en:Geography",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The highest cliff of a glacial cirque."
      ],
      "id": "en-headwall-en-noun-I3v9jfNV",
      "links": [
        [
          "geography",
          "geography"
        ],
        [
          "cliff",
          "cliff"
        ],
        [
          "glacial",
          "glacial"
        ],
        [
          "cirque",
          "cirque"
        ]
      ],
      "raw_glosses": [
        "(geography) The highest cliff of a glacial cirque."
      ],
      "topics": [
        "geography",
        "natural-sciences"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geology",
          "orig": "en:Geology",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The steep cliff at the back of a cirque."
      ],
      "id": "en-headwall-en-noun-E8CvB9RE",
      "links": [
        [
          "geology",
          "geology"
        ]
      ],
      "raw_glosses": [
        "(geology) The steep cliff at the back of a cirque."
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    },
    {
      "categories": [
        {
          "_dis": "30 31 39",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "29 30 41",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "26 28 46",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1950 September, “Central London Railway Jubilee”, in Railway Magazine, page 622:",
          "text": "The platforms of all stations from Shepherds Bush to Liverpool Street have been lengthened from 325 ft. to 427 ft. between tunnel headwalls, to take longer trains.",
          "type": "quote"
        },
        {
          "ref": "2020 August 12, “Network News: HS2 tunnel portal readied for TBMs”, in Rail, page 10:",
          "text": "HS2 Ltd has built a 17-metre-high headwall and reinforced the ground at what will become the south portal of the ten-mile Chiltern Tunnel, as part of preparations for the arrival next year of tunnel boring machines (TBMs).",
          "type": "quote"
        }
      ],
      "glosses": [
        "A retaining wall at the outlet of a drain, culvert or tunnel."
      ],
      "id": "en-headwall-en-noun-TQe5dbC7",
      "links": [
        [
          "outlet",
          "outlet"
        ],
        [
          "drain",
          "drain"
        ],
        [
          "culvert",
          "culvert"
        ],
        [
          "tunnel",
          "tunnel"
        ]
      ],
      "raw_glosses": [
        "(civil engineering) A retaining wall at the outlet of a drain, culvert or tunnel."
      ],
      "topics": [
        "civil-engineering",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "wikipedia": [
    "headwall"
  ],
  "word": "headwall"
}

{
  "categories": [
    "English compound terms",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "head",
        "3": "wall"
      },
      "expansion": "head + wall",
      "name": "compound"
    }
  ],
  "etymology_text": "From head + wall.",
  "forms": [
    {
      "form": "headwalls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "headwall (plural headwalls)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Geography"
      ],
      "glosses": [
        "The highest cliff of a glacial cirque."
      ],
      "links": [
        [
          "geography",
          "geography"
        ],
        [
          "cliff",
          "cliff"
        ],
        [
          "glacial",
          "glacial"
        ],
        [
          "cirque",
          "cirque"
        ]
      ],
      "raw_glosses": [
        "(geography) The highest cliff of a glacial cirque."
      ],
      "topics": [
        "geography",
        "natural-sciences"
      ]
    },
    {
      "categories": [
        "en:Geology"
      ],
      "glosses": [
        "The steep cliff at the back of a cirque."
      ],
      "links": [
        [
          "geology",
          "geology"
        ]
      ],
      "raw_glosses": [
        "(geology) The steep cliff at the back of a cirque."
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    },
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1950 September, “Central London Railway Jubilee”, in Railway Magazine, page 622:",
          "text": "The platforms of all stations from Shepherds Bush to Liverpool Street have been lengthened from 325 ft. to 427 ft. between tunnel headwalls, to take longer trains.",
          "type": "quote"
        },
        {
          "ref": "2020 August 12, “Network News: HS2 tunnel portal readied for TBMs”, in Rail, page 10:",
          "text": "HS2 Ltd has built a 17-metre-high headwall and reinforced the ground at what will become the south portal of the ten-mile Chiltern Tunnel, as part of preparations for the arrival next year of tunnel boring machines (TBMs).",
          "type": "quote"
        }
      ],
      "glosses": [
        "A retaining wall at the outlet of a drain, culvert or tunnel."
      ],
      "links": [
        [
          "outlet",
          "outlet"
        ],
        [
          "drain",
          "drain"
        ],
        [
          "culvert",
          "culvert"
        ],
        [
          "tunnel",
          "tunnel"
        ]
      ],
      "raw_glosses": [
        "(civil engineering) A retaining wall at the outlet of a drain, culvert or tunnel."
      ],
      "topics": [
        "civil-engineering",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "wikipedia": [
    "headwall"
  ],
  "word": "headwall"
}