"preemptor" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "praeemptor"
      },
      "expansion": "Latin praeemptor",
      "name": "uder"
    }
  ],
  "etymology_text": "Compare Latin praeemptor.",
  "forms": [
    {
      "form": "preemptors",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "preemptor (plural preemptors)",
      "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 with vowel pseudo-digraphs",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "One who preempts; especially one who appropriates public land."
      ],
      "id": "en-preemptor-en-noun-4UfrpKeT",
      "links": [
        [
          "preempt",
          "preempt"
        ],
        [
          "appropriate",
          "appropriate"
        ]
      ]
    }
  ],
  "word": "preemptor"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "praeemptor"
      },
      "expansion": "Latin praeemptor",
      "name": "uder"
    }
  ],
  "etymology_text": "Compare Latin praeemptor.",
  "forms": [
    {
      "form": "preemptors",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "preemptor (plural preemptors)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms derived from Latin",
        "English terms with vowel pseudo-digraphs",
        "English undefined derivations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "One who preempts; especially one who appropriates public land."
      ],
      "links": [
        [
          "preempt",
          "preempt"
        ],
        [
          "appropriate",
          "appropriate"
        ]
      ]
    }
  ],
  "word": "preemptor"
}