"旦夕" meaning in 日本語

{
  "categories": [
    {
      "kind": "other",
      "name": "日本語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語 名詞",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "旦と夕。"
      ],
      "id": "ja-旦夕-ja-noun-bztgExIK",
      "ruby": [
        [
          "旦",
          "あさ"
        ],
        [
          "夕",
          "ゆう"
        ]
      ]
    },
    {
      "examples": [
        {
          "bold_text_offsets": [
            [
              1,
              3
            ]
          ],
          "ref": "（= 命が危ない）",
          "text": "命旦夕"
        }
      ],
      "glosses": [
        "今晩か明朝かという程に、凶事が今すぐに起こりそうなこと。危険や死が迫っていること。"
      ],
      "id": "ja-旦夕-ja-noun-3FiUBaqq",
      "ruby": [
        [
          "起",
          "お"
        ],
        [
          "迫",
          "せま"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "朝暮"
    },
    {
      "ruby": [
        [
          "朝夕",
          "ちょうせき"
        ]
      ],
      "word": "朝夕"
    },
    {
      "ruby": [
        [
          "瀬戸際",
          "せとぎわ"
        ]
      ],
      "word": "瀬戸際"
    },
    {
      "word": "危急"
    },
    {
      "word": "緊迫"
    }
  ],
  "word": "旦夕"
}

{
  "categories": [
    "日本語",
    "日本語 名詞"
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "旦と夕。"
      ],
      "ruby": [
        [
          "旦",
          "あさ"
        ],
        [
          "夕",
          "ゆう"
        ]
      ]
    },
    {
      "examples": [
        {
          "bold_text_offsets": [
            [
              1,
              3
            ]
          ],
          "ref": "（= 命が危ない）",
          "text": "命旦夕"
        }
      ],
      "glosses": [
        "今晩か明朝かという程に、凶事が今すぐに起こりそうなこと。危険や死が迫っていること。"
      ],
      "ruby": [
        [
          "起",
          "お"
        ],
        [
          "迫",
          "せま"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "朝暮"
    },
    {
      "ruby": [
        [
          "朝夕",
          "ちょうせき"
        ]
      ],
      "word": "朝夕"
    },
    {
      "ruby": [
        [
          "瀬戸際",
          "せとぎわ"
        ]
      ],
      "word": "瀬戸際"
    },
    {
      "word": "危急"
    },
    {
      "word": "緊迫"
    }
  ],
  "word": "旦夕"
}