"foss" meaning in Norwegian Bokmål

{
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "da",
        "3": "fos"
      },
      "expansion": "Danish fos",
      "name": "der"
    },
    {
      "args": {
        "1": "nb",
        "2": "no",
        "3": "-"
      },
      "expansion": "Norwegian",
      "name": "bor"
    },
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "foss"
      },
      "expansion": "Old Norse foss",
      "name": "der"
    },
    {
      "args": {
        "1": "nb",
        "2": "gem-pro",
        "3": "*fursaz"
      },
      "expansion": "Proto-Germanic *fursaz",
      "name": "der"
    }
  ],
  "etymology_text": "From Danish fos, revived through Norwegian foss, from Old Norse foss, fors, from Proto-Germanic *fursaz.",
  "forms": [
    {
      "form": "fossen",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "fosser",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "fossene",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Norwegian Bokmål entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "6 15 3 5 8 14 12 16 4 16 0",
          "kind": "other",
          "name": "Old Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "2 9 1 1 13 19 20 24 2 10 0",
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "1 10 1 1 12 18 20 22 1 14 0",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "tags": [
            "verb"
          ],
          "word": "fosse"
        }
      ],
      "glosses": [
        "a waterfall"
      ],
      "id": "en-foss-nb-noun-mMQPU~GE",
      "links": [
        [
          "waterfall",
          "waterfall"
        ]
      ],
      "synonyms": [
        {
          "word": "fossefall"
        },
        {
          "word": "vannfall"
        },
        {
          "word": "vassfall"
        }
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "no:foss"
      ]
    }
  ],
  "word": "foss"
}

{
  "categories": [
    "Old Irish entries with incorrect language header",
    "Old Irish lemmas",
    "Old Irish masculine nouns",
    "Old Irish masculine o-stem nouns",
    "Old Irish nouns",
    "Old Irish terms derived from Proto-Celtic",
    "Old Irish terms derived from Proto-Indo-European",
    "Old Irish terms inherited from Proto-Celtic",
    "Pages with 7 entries",
    "Pages with entries"
  ],
  "derived": [
    {
      "tags": [
        "verb"
      ],
      "word": "fosse"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "da",
        "3": "fos"
      },
      "expansion": "Danish fos",
      "name": "der"
    },
    {
      "args": {
        "1": "nb",
        "2": "no",
        "3": "-"
      },
      "expansion": "Norwegian",
      "name": "bor"
    },
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "foss"
      },
      "expansion": "Old Norse foss",
      "name": "der"
    },
    {
      "args": {
        "1": "nb",
        "2": "gem-pro",
        "3": "*fursaz"
      },
      "expansion": "Proto-Germanic *fursaz",
      "name": "der"
    }
  ],
  "etymology_text": "From Danish fos, revived through Norwegian foss, from Old Norse foss, fors, from Proto-Germanic *fursaz.",
  "forms": [
    {
      "form": "fossen",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "fosser",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "fossene",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Norwegian Bokmål entries with incorrect language header",
        "Norwegian Bokmål lemmas",
        "Norwegian Bokmål masculine nouns",
        "Norwegian Bokmål nouns",
        "Norwegian Bokmål terms borrowed from Norwegian",
        "Norwegian Bokmål terms derived from Danish",
        "Norwegian Bokmål terms derived from Norwegian",
        "Norwegian Bokmål terms derived from Old Norse",
        "Norwegian Bokmål terms derived from Proto-Germanic",
        "Norwegian Bokmål terms inherited from Danish",
        "Pages with 7 entries",
        "Pages with entries"
      ],
      "glosses": [
        "a waterfall"
      ],
      "links": [
        [
          "waterfall",
          "waterfall"
        ]
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "no:foss"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "fossefall"
    },
    {
      "word": "vannfall"
    },
    {
      "word": "vassfall"
    }
  ],
  "word": "foss"
}