"couvre-face" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "→ voir couvrir et face"
  ],
  "forms": [
    {
      "form": "couvre-faces",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "colspan=\"2\" :Modèle:!\\ku.vʁə.fas\\",
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en français",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "A Lille, au niveau de l'ancienne Porte d'eau, un couvre-face est disposé entre la contregarde et le tenaillon."
        }
      ],
      "glosses": [
        "Ouvrage de fortification du XVIIIᵉ siècle comparable à la braie remparée de la fortification médiévale."
      ],
      "id": "fr-couvre-face-fr-noun-TOedof6C",
      "raw_tags": [
        "Ancien terme de fortification"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ku.vʁə.fas\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "couvre-face"
}

{
  "categories": [
    "Lemmes en français",
    "Noms communs en français",
    "français"
  ],
  "etymology_texts": [
    "→ voir couvrir et face"
  ],
  "forms": [
    {
      "form": "couvre-faces",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "colspan=\"2\" :Modèle:!\\ku.vʁə.fas\\",
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Exemples en français"
      ],
      "examples": [
        {
          "text": "A Lille, au niveau de l'ancienne Porte d'eau, un couvre-face est disposé entre la contregarde et le tenaillon."
        }
      ],
      "glosses": [
        "Ouvrage de fortification du XVIIIᵉ siècle comparable à la braie remparée de la fortification médiévale."
      ],
      "raw_tags": [
        "Ancien terme de fortification"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ku.vʁə.fas\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "couvre-face"
}