"習" meaning in Japanese

{
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Grade 3 kanji",
          "parents": [],
          "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 non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "english": "practice",
          "roman": "renshū",
          "ruby": [
            [
              "練",
              "れん"
            ],
            [
              "習",
              "しゅう"
            ]
          ],
          "word": "練習"
        },
        {
          "english": "common practice",
          "roman": "kanshū",
          "ruby": [
            [
              "慣",
              "かん"
            ],
            [
              "習",
              "しゅう"
            ]
          ],
          "word": "慣習"
        },
        {
          "english": "custom, habit",
          "roman": "shūkan",
          "ruby": [
            [
              "習",
              "しゅう"
            ],
            [
              "慣",
              "かん"
            ]
          ],
          "word": "習慣"
        },
        {
          "english": "self-study",
          "roman": "jishū",
          "ruby": [
            [
              "自",
              "じ"
            ],
            [
              "習",
              "しゅう"
            ]
          ],
          "word": "自習"
        }
      ],
      "glosses": [
        "learn"
      ],
      "id": "en-習-ja-character-ao2lLpIG",
      "tags": [
        "grade-3-kanji",
        "kanji"
      ],
      "wikipedia": [
        "Kyūjitai",
        "Shinjitai"
      ]
    }
  ],
  "word": "習"
}

{
  "derived": [
    {
      "english": "practice",
      "roman": "renshū",
      "ruby": [
        [
          "練",
          "れん"
        ],
        [
          "習",
          "しゅう"
        ]
      ],
      "word": "練習"
    },
    {
      "english": "common practice",
      "roman": "kanshū",
      "ruby": [
        [
          "慣",
          "かん"
        ],
        [
          "習",
          "しゅう"
        ]
      ],
      "word": "慣習"
    },
    {
      "english": "custom, habit",
      "roman": "shūkan",
      "ruby": [
        [
          "習",
          "しゅう"
        ],
        [
          "慣",
          "かん"
        ]
      ],
      "word": "習慣"
    },
    {
      "english": "self-study",
      "roman": "jishū",
      "ruby": [
        [
          "自",
          "じ"
        ],
        [
          "習",
          "しゅう"
        ]
      ],
      "word": "自習"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "Grade 3 kanji",
        "Japanese Han characters",
        "Japanese kanji with goon reading じゅう",
        "Japanese kanji with historical goon reading じふ",
        "Japanese kanji with historical kan'on reading しふ",
        "Japanese kanji with kan'on reading しゅう",
        "Japanese kanji with kun reading なら-い",
        "Japanese kanji with kun reading なら-う",
        "Japanese kanji with nanori reading しげ",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese terms spelled with 習",
        "Japanese terms with non-redundant manual transliterations",
        "Japanese terms with redundant transliterations"
      ],
      "glosses": [
        "learn"
      ],
      "tags": [
        "grade-3-kanji",
        "kanji"
      ],
      "wikipedia": [
        "Kyūjitai",
        "Shinjitai"
      ]
    }
  ],
  "word": "習"
}