"oldster" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "old",
        "3": "-ster"
      },
      "expansion": "old + -ster",
      "name": "af"
    }
  ],
  "etymology_text": "From old + -ster, modelled after youngster.",
  "forms": [
    {
      "form": "oldsters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "oldster (plural oldsters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "youngster"
        }
      ],
      "categories": [
        {
          "_dis": "99 1",
          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "2020 February 10, David Brooks, “The Nuclear Family Was a Mistake”, in The Atlantic:",
          "text": "The oldsters start squabbling about whose memory is better. “It was cold that day,” one says about some faraway memory. “What are you talking about? It was May, late May,” says another.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Someone who is old."
      ],
      "id": "en-oldster-en-noun-P5YDw2US",
      "links": [
        [
          "old",
          "old"
        ]
      ],
      "qualifier": "sometimes disrespectful",
      "raw_glosses": [
        "(informal, sometimes disrespectful) Someone who is old."
      ],
      "synonyms": [
        {
          "word": "geezer"
        },
        {
          "word": "old timer"
        },
        {
          "word": "senior citizen"
        },
        {
          "word": "old person"
        }
      ],
      "tags": [
        "informal"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "19 81",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "24 76",
          "kind": "other",
          "name": "English terms suffixed with -ster",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "11 89",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "6 94",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A midshipman of four years' standing; a master's mate."
      ],
      "id": "en-oldster-en-noun-clxF3AVv",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "midshipman",
          "midshipman"
        ]
      ],
      "raw_glosses": [
        "(nautical) A midshipman of four years' standing; a master's mate."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "word": "oldster"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms suffixed with -ster",
    "Pages with 1 entry",
    "Pages with entries",
    "en:People"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "old",
        "3": "-ster"
      },
      "expansion": "old + -ster",
      "name": "af"
    }
  ],
  "etymology_text": "From old + -ster, modelled after youngster.",
  "forms": [
    {
      "form": "oldsters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "oldster (plural oldsters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "youngster"
        }
      ],
      "categories": [
        "English informal terms",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2020 February 10, David Brooks, “The Nuclear Family Was a Mistake”, in The Atlantic:",
          "text": "The oldsters start squabbling about whose memory is better. “It was cold that day,” one says about some faraway memory. “What are you talking about? It was May, late May,” says another.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Someone who is old."
      ],
      "links": [
        [
          "old",
          "old"
        ]
      ],
      "qualifier": "sometimes disrespectful",
      "raw_glosses": [
        "(informal, sometimes disrespectful) Someone who is old."
      ],
      "synonyms": [
        {
          "word": "geezer"
        },
        {
          "word": "old timer"
        },
        {
          "word": "senior citizen"
        },
        {
          "word": "old person"
        }
      ],
      "tags": [
        "informal"
      ]
    },
    {
      "categories": [
        "en:Nautical"
      ],
      "glosses": [
        "A midshipman of four years' standing; a master's mate."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "midshipman",
          "midshipman"
        ]
      ],
      "raw_glosses": [
        "(nautical) A midshipman of four years' standing; a master's mate."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "word": "oldster"
}