"bolsterer" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "bolster",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "bolster + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "bolster + -er",
  "forms": [
    {
      "form": "bolsterers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bolsterer (plural bolsterers)",
      "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 suffixed with -er (agent noun)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1944, The Lamp, volumes 26-30, page 53",
          "text": "When canned foods pall, a rifle is a handy bolsterer of the meat supply in this land of wild game; when, in the lonely night, the two geologists have talked through every subject in their ken, a book lumined by a gasoline lamp is a real diversion.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who, or that which, bolsters."
      ],
      "id": "en-bolsterer-en-noun-VsLWnRIz",
      "links": [
        [
          "bolster",
          "bolster"
        ]
      ]
    }
  ],
  "word": "bolsterer"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "bolster",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "bolster + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "bolster + -er",
  "forms": [
    {
      "form": "bolsterers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bolsterer (plural bolsterers)",
      "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 (agent noun)",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1944, The Lamp, volumes 26-30, page 53",
          "text": "When canned foods pall, a rifle is a handy bolsterer of the meat supply in this land of wild game; when, in the lonely night, the two geologists have talked through every subject in their ken, a book lumined by a gasoline lamp is a real diversion.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who, or that which, bolsters."
      ],
      "links": [
        [
          "bolster",
          "bolster"
        ]
      ]
    }
  ],
  "word": "bolsterer"
}