"beach head" meaning in English

{
  "forms": [
    {
      "form": "beach heads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "beach head (plural beach heads)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "beachhead"
        }
      ],
      "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": "2024 May 29, Christian Wolmar, “The Liberation Line: the days after D-Day”, in RAIL, number 1010, page 59:",
          "text": "So important was their task of rebuilding the railways around the beach heads that these men had been split into three groups travelling on different ships, to ensure that sufficient numbers to start work arrived as quickly as possible.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of beachhead."
      ],
      "id": "en-beach_head-en-noun-dBdgh9Gm",
      "links": [
        [
          "beachhead",
          "beachhead#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "beach head"
}

{
  "forms": [
    {
      "form": "beach heads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "beach head (plural beach heads)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "beachhead"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2024 May 29, Christian Wolmar, “The Liberation Line: the days after D-Day”, in RAIL, number 1010, page 59:",
          "text": "So important was their task of rebuilding the railways around the beach heads that these men had been split into three groups travelling on different ships, to ensure that sufficient numbers to start work arrived as quickly as possible.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of beachhead."
      ],
      "links": [
        [
          "beachhead",
          "beachhead#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "beach head"
}