"初見殺し" meaning in Japanese

{
  "forms": [
    {
      "form": "初見殺し",
      "ruby": [
        [
          "初",
          "しょ"
        ],
        [
          "見",
          "けん"
        ],
        [
          "殺",
          "ごろ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shoken goroshi",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "しょけん ごろし"
      },
      "expansion": "初(しょ)見(けん)殺(ごろ)し • (shoken goroshi)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "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 3 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": "Video games",
          "orig": "ja:Video games",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "beginner's mistake; getting killed on one's first play, due to lacking knowledge or understanding of the game"
      ],
      "id": "en-初見殺し-ja-noun-YMFwBh7I",
      "links": [
        [
          "video game",
          "video game"
        ]
      ],
      "raw_glosses": [
        "(video games slang) beginner's mistake; getting killed on one's first play, due to lacking knowledge or understanding of the game"
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "video-games"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕo̞ke̞ŋ ɡo̞ɾo̞ɕi]"
    }
  ],
  "word": "初見殺し"
}

{
  "forms": [
    {
      "form": "初見殺し",
      "ruby": [
        [
          "初",
          "しょ"
        ],
        [
          "見",
          "けん"
        ],
        [
          "殺",
          "ごろ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shoken goroshi",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "しょけん ごろし"
      },
      "expansion": "初(しょ)見(けん)殺(ごろ)し • (shoken goroshi)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese slang",
        "Japanese terms spelled with fifth grade kanji",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with fourth grade kanji",
        "Japanese terms with 3 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation missing pitch accent",
        "Japanese terms with multiple readings",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "ja:Video games"
      ],
      "glosses": [
        "beginner's mistake; getting killed on one's first play, due to lacking knowledge or understanding of the game"
      ],
      "links": [
        [
          "video game",
          "video game"
        ]
      ],
      "raw_glosses": [
        "(video games slang) beginner's mistake; getting killed on one's first play, due to lacking knowledge or understanding of the game"
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "video-games"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕo̞ke̞ŋ ɡo̞ɾo̞ɕi]"
    }
  ],
  "word": "初見殺し"
}