"真芯" meaning in Japanese

{
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    {
      "args": {
        "1": "真",
        "2": "ま",
        "3": "芯",
        "4": "しん",
        "t1": "",
        "t2": ""
      },
      "expansion": "真(ま) (ma) + 芯(しん) (shin)",
      "name": "ja-compound"
    }
  ],
  "etymology_text": "From 真(ま) (ma) + 芯(しん) (shin).",
  "forms": [
    {
      "form": "真芯",
      "ruby": [
        [
          "真",
          "ま"
        ],
        [
          "芯",
          "しん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "mashin",
      "tags": [
        "romanization"
      ]
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  ],
  "head_templates": [
    {
      "args": {
        "1": "ましん"
      },
      "expansion": "真(ま)芯(しん) • (mashin)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "parents": [
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Baseball",
          "orig": "ja:Baseball",
          "parents": [
            "Ball games",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "sweet spot of a bat"
      ],
      "id": "en-真芯-ja-noun-joVh2w1e",
      "links": [
        [
          "baseball",
          "baseball"
        ],
        [
          "sweet spot",
          "sweet spot"
        ],
        [
          "bat",
          "bat"
        ]
      ],
      "raw_glosses": [
        "(baseball) sweet spot of a bat"
      ],
      "synonyms": [
        {
          "roman": "masshin",
          "ruby": [
            [
              "真",
              "ま"
            ],
            [
              "芯",
              "しん"
            ]
          ],
          "word": "真っ芯"
        }
      ],
      "topics": [
        "ball-games",
        "baseball",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ma̠ɕĩɴ]"
    }
  ],
  "word": "真芯"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "真",
        "2": "ま",
        "3": "芯",
        "4": "しん",
        "t1": "",
        "t2": ""
      },
      "expansion": "真(ま) (ma) + 芯(しん) (shin)",
      "name": "ja-compound"
    }
  ],
  "etymology_text": "From 真(ま) (ma) + 芯(しん) (shin).",
  "forms": [
    {
      "form": "真芯",
      "ruby": [
        [
          "真",
          "ま"
        ],
        [
          "芯",
          "しん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "mashin",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ましん"
      },
      "expansion": "真(ま)芯(しん) • (mashin)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
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        "Japanese compound terms",
        "Japanese entries with incorrect language header",
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        "Japanese terms with redundant sortkeys",
        "Japanese terms written with two Han script characters",
        "ja:Baseball"
      ],
      "glosses": [
        "sweet spot of a bat"
      ],
      "links": [
        [
          "baseball",
          "baseball"
        ],
        [
          "sweet spot",
          "sweet spot"
        ],
        [
          "bat",
          "bat"
        ]
      ],
      "raw_glosses": [
        "(baseball) sweet spot of a bat"
      ],
      "topics": [
        "ball-games",
        "baseball",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ma̠ɕĩɴ]"
    }
  ],
  "synonyms": [
    {
      "roman": "masshin",
      "ruby": [
        [
          "真",
          "ま"
        ],
        [
          "芯",
          "しん"
        ]
      ],
      "word": "真っ芯"
    }
  ],
  "word": "真芯"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "真芯"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "真芯",
  "trace": ""
}