"予科練" meaning in Japanese

{
  "forms": [
    {
      "form": "予科練",
      "ruby": [
        [
          "予",
          "よ"
        ],
        [
          "科",
          "か"
        ],
        [
          "練",
          "れん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "yokaren",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "yokwaren",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "よくわれん",
      "roman": "yokwaren",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "よかれん",
        "hhira": "よくわれん"
      },
      "expansion": "予(よ)科(か)練(れん) • (yokaren) ^(←よくわれん (yokwaren)?)",
      "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",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "primary training"
      ],
      "id": "en-予科練-ja-noun-LEDmT~wr",
      "links": [
        [
          "primary",
          "primary"
        ],
        [
          "training",
          "training"
        ]
      ],
      "raw_glosses": [
        "(Japanese navy, historical) primary training"
      ],
      "related": [
        {
          "roman": "yoka",
          "ruby": [
            [
              "予科",
              "よか"
            ]
          ],
          "word": "予科"
        }
      ],
      "synonyms": [
        {
          "roman": "kaigun hikō yoka renshūsei",
          "ruby": [
            [
              "海軍飛行予科練習生",
              "かいぐんひこうよかれんしゅうせい"
            ]
          ],
          "sense": "full name",
          "word": "海軍飛行予科練習生"
        }
      ],
      "tags": [
        "Japanese",
        "historical"
      ],
      "topics": [
        "government",
        "military",
        "navy",
        "politics",
        "war"
      ],
      "wikipedia": [
        "ja:予科練"
      ]
    }
  ],
  "sounds": [
    {
      "other": "よかれん"
    },
    {
      "ipa": "[jo̞ka̠ɾẽ̞ɴ]"
    }
  ],
  "word": "予科練"
}

{
  "forms": [
    {
      "form": "予科練",
      "ruby": [
        [
          "予",
          "よ"
        ],
        [
          "科",
          "か"
        ],
        [
          "練",
          "れん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "yokaren",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "yokwaren",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "よくわれん",
      "roman": "yokwaren",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "よかれん",
        "hhira": "よくわれん"
      },
      "expansion": "予(よ)科(か)練(れん) • (yokaren) ^(←よくわれん (yokwaren)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "related": [
    {
      "roman": "yoka",
      "ruby": [
        [
          "予科",
          "よか"
        ]
      ],
      "word": "予科"
    }
  ],
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with historical senses",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with three Han script characters"
      ],
      "glosses": [
        "primary training"
      ],
      "links": [
        [
          "primary",
          "primary"
        ],
        [
          "training",
          "training"
        ]
      ],
      "raw_glosses": [
        "(Japanese navy, historical) primary training"
      ],
      "tags": [
        "Japanese",
        "historical"
      ],
      "topics": [
        "government",
        "military",
        "navy",
        "politics",
        "war"
      ],
      "wikipedia": [
        "ja:予科練"
      ]
    }
  ],
  "sounds": [
    {
      "other": "よかれん"
    },
    {
      "ipa": "[jo̞ka̠ɾẽ̞ɴ]"
    }
  ],
  "synonyms": [
    {
      "roman": "kaigun hikō yoka renshūsei",
      "ruby": [
        [
          "海軍飛行予科練習生",
          "かいぐんひこうよかれんしゅうせい"
        ]
      ],
      "sense": "full name",
      "word": "海軍飛行予科練習生"
    }
  ],
  "word": "予科練"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <span> not properly closed",
  "path": [
    "予科練"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "予科練",
  "trace": "started on line 2, detected on line 2"
}

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