"burial mound" meaning in English

{
  "forms": [
    {
      "form": "burial mounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "burial mound (plural burial mounds)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A mound of earth and stones raised over a grave or graves."
      ],
      "id": "en-burial_mound-en-noun-QJgTkz7q",
      "links": [
        [
          "mound",
          "mound"
        ],
        [
          "grave",
          "grave"
        ]
      ],
      "related": [
        {
          "word": "dolmen"
        },
        {
          "word": "pyramid"
        }
      ],
      "synonyms": [
        {
          "word": "barrow"
        },
        {
          "tags": [
            "Scottish"
          ],
          "word": "burian"
        },
        {
          "word": "cairn"
        },
        {
          "english": "Siberia and Central Asia",
          "word": "kurgan"
        },
        {
          "word": "tumulus"
        }
      ]
    }
  ],
  "word": "burial mound"
}

{
  "forms": [
    {
      "form": "burial mounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "burial mound (plural burial mounds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "dolmen"
    },
    {
      "word": "pyramid"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A mound of earth and stones raised over a grave or graves."
      ],
      "links": [
        [
          "mound",
          "mound"
        ],
        [
          "grave",
          "grave"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "barrow"
    },
    {
      "tags": [
        "Scottish"
      ],
      "word": "burian"
    },
    {
      "word": "cairn"
    },
    {
      "english": "Siberia and Central Asia",
      "word": "kurgan"
    },
    {
      "word": "tumulus"
    }
  ],
  "word": "burial mound"
}