"losa" meaning in Basque

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en basque issus d’un mot en espagnol",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en basque",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Basque",
      "orig": "basque",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De l’espagnol losa."
  ],
  "forms": [
    {
      "form": "Déclinaison"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en basque de l’architecture",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en basque",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Dalle, pierre plate."
      ],
      "id": "fr-losa-eu-noun-y2bUI3Bo",
      "topics": [
        "architecture"
      ]
    }
  ],
  "synonyms": [
    {
      "raw_tags": [
        "Plus courant"
      ],
      "word": "lauza"
    }
  ],
  "word": "losa"
}

{
  "categories": [
    "Mots en basque issus d’un mot en espagnol",
    "Noms communs en basque",
    "basque"
  ],
  "etymology_texts": [
    "De l’espagnol losa."
  ],
  "forms": [
    {
      "form": "Déclinaison"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en basque de l’architecture",
        "Wiktionnaire:Exemples manquants en basque"
      ],
      "glosses": [
        "Dalle, pierre plate."
      ],
      "topics": [
        "architecture"
      ]
    }
  ],
  "synonyms": [
    {
      "raw_tags": [
        "Plus courant"
      ],
      "word": "lauza"
    }
  ],
  "word": "losa"
}