"blåmandag" meaning in Noors

{
  "categories": [
    {
      "kind": "other",
      "name": "Woorden in het Noors",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Noors met IPA-weergave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Noors met audioweergave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Noors van lengte 9",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Zelfstandig naamwoord in het Noors",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Samenstelling van blå en mandag."
  ],
  "hyphenation": "blå·man·dag",
  "lang": "Noors",
  "lang_code": "no",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "glosses": [
        "luie maandag"
      ],
      "id": "nl-blåmandag-no-noun-km10GCFb"
    }
  ],
  "sounds": [
    {
      "audio": "no-blåmandag.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/19/No-blåmandag.ogg/No-blåmandag.ogg.mp3",
      "ogg_url": "https://commons.wikimedia.org/wiki/Special:FilePath/no-blåmandag.ogg"
    },
    {
      "ipa": "/ˈbloːˈmɑndɑg/"
    }
  ],
  "word": "blåmandag"
}

{
  "categories": [
    "Woorden in het Noors",
    "Woorden in het Noors met IPA-weergave",
    "Woorden in het Noors met audioweergave",
    "Woorden in het Noors van lengte 9",
    "Zelfstandig naamwoord in het Noors"
  ],
  "etymology_texts": [
    "Samenstelling van blå en mandag."
  ],
  "hyphenation": "blå·man·dag",
  "lang": "Noors",
  "lang_code": "no",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "glosses": [
        "luie maandag"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "no-blåmandag.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/19/No-blåmandag.ogg/No-blåmandag.ogg.mp3",
      "ogg_url": "https://commons.wikimedia.org/wiki/Special:FilePath/no-blåmandag.ogg"
    },
    {
      "ipa": "/ˈbloːˈmɑndɑg/"
    }
  ],
  "word": "blåmandag"
}