"bolthead" meaning in English

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      "expansion": "bolt + head",
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  "etymology_text": "From bolt + head.",
  "forms": [
    {
      "form": "boltheads",
      "tags": [
        "plural"
      ]
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      "expansion": "bolthead (plural boltheads)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "topical",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
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      ],
      "glosses": [
        "A round-bottomed flask with a long neck (used especially for distillation)"
      ],
      "id": "en-bolthead-en-noun-1b~9DDOt",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "round-bottomed flask",
          "round-bottomed flask"
        ],
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          "neck",
          "neck"
        ]
      ],
      "raw_glosses": [
        "(chemistry) A round-bottomed flask with a long neck (used especially for distillation)"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "glosses": [
        "The head of a bolt."
      ],
      "id": "en-bolthead-en-noun-h3DdOHZS",
      "links": [
        [
          "bolt",
          "bolt"
        ]
      ]
    }
  ],
  "word": "bolthead"
}

{
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    "English countable nouns",
    "English entries with incorrect language header",
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    "English nouns",
    "English terms with consonant pseudo-digraphs",
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  "etymology_templates": [
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      "args": {
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      },
      "expansion": "bolt + head",
      "name": "compound"
    }
  ],
  "etymology_text": "From bolt + head.",
  "forms": [
    {
      "form": "boltheads",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "bolthead (plural boltheads)",
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  "pos": "noun",
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        "en:Chemistry"
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      "glosses": [
        "A round-bottomed flask with a long neck (used especially for distillation)"
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          "round-bottomed flask",
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        "(chemistry) A round-bottomed flask with a long neck (used especially for distillation)"
      ],
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        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "glosses": [
        "The head of a bolt."
      ],
      "links": [
        [
          "bolt",
          "bolt"
        ]
      ]
    }
  ],
  "word": "bolthead"
}