"会心の一撃" meaning in Japanese

{
  "forms": [
    {
      "form": "会心の一撃",
      "ruby": [
        [
          "会",
          "かい"
        ],
        [
          "心",
          "しん"
        ],
        [
          "一",
          "いち"
        ],
        [
          "撃",
          "げき"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kaishin no ichigeki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "かいしん の いちげき"
      },
      "expansion": "会(かい)心(しん)の一(いち)撃(げき) • (kaishin no ichigeki)",
      "name": "ja-phrase"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 4 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with multiple readings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "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": "ja",
          "name": "Role-playing games",
          "orig": "ja:Role-playing games",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ja",
          "name": "Video games",
          "orig": "ja:Video games",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A critical hit, a successful attack that deals more damage than normal."
      ],
      "id": "en-会心の一撃-ja-phrase-Udhkz1Li",
      "links": [
        [
          "video game",
          "video game"
        ],
        [
          "roleplaying game",
          "roleplaying game"
        ],
        [
          "critical hit",
          "critical hit"
        ],
        [
          "attack",
          "attack"
        ],
        [
          "damage",
          "damage"
        ]
      ],
      "qualifier": "roleplaying games",
      "raw_glosses": [
        "(video games, roleplaying games) A critical hit, a successful attack that deals more damage than normal."
      ],
      "topics": [
        "video-games"
      ]
    }
  ],
  "word": "会心の一撃"
}

{
  "forms": [
    {
      "form": "会心の一撃",
      "ruby": [
        [
          "会",
          "かい"
        ],
        [
          "心",
          "しん"
        ],
        [
          "一",
          "いち"
        ],
        [
          "撃",
          "げき"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kaishin no ichigeki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "かいしん の いちげき"
      },
      "expansion": "会(かい)心(しん)の一(いち)撃(げき) • (kaishin no ichigeki)",
      "name": "ja-phrase"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese phrases",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms with 4 kanji",
        "Japanese terms with multiple readings",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "ja:Role-playing games",
        "ja:Video games"
      ],
      "glosses": [
        "A critical hit, a successful attack that deals more damage than normal."
      ],
      "links": [
        [
          "video game",
          "video game"
        ],
        [
          "roleplaying game",
          "roleplaying game"
        ],
        [
          "critical hit",
          "critical hit"
        ],
        [
          "attack",
          "attack"
        ],
        [
          "damage",
          "damage"
        ]
      ],
      "qualifier": "roleplaying games",
      "raw_glosses": [
        "(video games, roleplaying games) A critical hit, a successful attack that deals more damage than normal."
      ],
      "topics": [
        "video-games"
      ]
    }
  ],
  "word": "会心の一撃"
}