"uppercruster" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "upper crust",
        "3": "er"
      },
      "expansion": "upper crust + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From upper crust + -er.",
  "forms": [
    {
      "form": "uppercrusters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "uppercruster (plural uppercrusters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -er",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A member of the upper crust; a social elite."
      ],
      "id": "en-uppercruster-en-noun-LsoK-jDy",
      "links": [
        [
          "upper crust",
          "upper crust"
        ],
        [
          "elite",
          "elite"
        ]
      ]
    }
  ],
  "word": "uppercruster"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "upper crust",
        "3": "er"
      },
      "expansion": "upper crust + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From upper crust + -er.",
  "forms": [
    {
      "form": "uppercrusters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "uppercruster (plural uppercrusters)",
      "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 suffixed with -er",
        "Pages with 1 entry",
        "Pages with entries",
        "en:People"
      ],
      "glosses": [
        "A member of the upper crust; a social elite."
      ],
      "links": [
        [
          "upper crust",
          "upper crust"
        ],
        [
          "elite",
          "elite"
        ]
      ]
    }
  ],
  "word": "uppercruster"
}