"lumbral" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "līmināris"
      },
      "expansion": "Latin līmināris",
      "name": "der"
    },
    {
      "args": {
        "1": "es",
        "2": "liminar"
      },
      "expansion": "Doublet of liminar",
      "name": "doublet"
    }
  ],
  "etymology_text": "From Latin līmināris. Doublet of liminar.",
  "forms": [
    {
      "form": "lumbrales",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "lumbral m (plural lumbrales)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "umbral"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Obsolete spelling of umbral"
      ],
      "id": "en-lumbral-es-noun-F1ERCVZO",
      "links": [
        [
          "umbral",
          "umbral#Spanish"
        ]
      ],
      "tags": [
        "alt-of",
        "masculine",
        "obsolete"
      ]
    }
  ],
  "word": "lumbral"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "līmināris"
      },
      "expansion": "Latin līmināris",
      "name": "der"
    },
    {
      "args": {
        "1": "es",
        "2": "liminar"
      },
      "expansion": "Doublet of liminar",
      "name": "doublet"
    }
  ],
  "etymology_text": "From Latin līmināris. Doublet of liminar.",
  "forms": [
    {
      "form": "lumbrales",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "lumbral m (plural lumbrales)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "umbral"
        }
      ],
      "categories": [
        "Spanish countable nouns",
        "Spanish doublets",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish nouns",
        "Spanish obsolete forms",
        "Spanish terms derived from Latin"
      ],
      "glosses": [
        "Obsolete spelling of umbral"
      ],
      "links": [
        [
          "umbral",
          "umbral#Spanish"
        ]
      ],
      "tags": [
        "alt-of",
        "masculine",
        "obsolete"
      ]
    }
  ],
  "word": "lumbral"
}