"save something for a rainy day" meaning in English

{
  "forms": [
    {
      "form": "save for a rainy day",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "saves something for a rainy day",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "saving something for a rainy day",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "saved something for a rainy day",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "saved something for a rainy day",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "head": "save (something) for a rainy day"
      },
      "expansion": "save (something) for a rainy day (third-person singular simple present saves something for a rainy day, present participle saving something for a rainy day, simple past and past participle saved something for a rainy day)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "To save something just in case one may need it."
      ],
      "id": "en-save_something_for_a_rainy_day-en-verb-7NTl8tTM",
      "links": [
        [
          "just in case",
          "just in case"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To save something just in case one may need it."
      ],
      "related": [
        {
          "word": "nest egg"
        },
        {
          "word": "safety cushion"
        },
        {
          "word": "war chest"
        }
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "word": "mettre de côté"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "word": "etwas auf die hohe Kante legen"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "word": "guardar algo por si vienen mal dadas"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-save something for a rainy day.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3a/En-au-save_something_for_a_rainy_day.ogg/En-au-save_something_for_a_rainy_day.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/3a/En-au-save_something_for_a_rainy_day.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "save something for a rainy day"
}

{
  "forms": [
    {
      "form": "save for a rainy day",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "saves something for a rainy day",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "saving something for a rainy day",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "saved something for a rainy day",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "saved something for a rainy day",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "head": "save (something) for a rainy day"
      },
      "expansion": "save (something) for a rainy day (third-person singular simple present saves something for a rainy day, present participle saving something for a rainy day, simple past and past participle saved something for a rainy day)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "nest egg"
    },
    {
      "word": "safety cushion"
    },
    {
      "word": "war chest"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English terms with audio links",
        "English verbs",
        "Translation table header lacks gloss"
      ],
      "glosses": [
        "To save something just in case one may need it."
      ],
      "links": [
        [
          "just in case",
          "just in case"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To save something just in case one may need it."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-save something for a rainy day.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3a/En-au-save_something_for_a_rainy_day.ogg/En-au-save_something_for_a_rainy_day.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/3a/En-au-save_something_for_a_rainy_day.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "word": "mettre de côté"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "word": "etwas auf die hohe Kante legen"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "word": "guardar algo por si vienen mal dadas"
    }
  ],
  "word": "save something for a rainy day"
}