"many a" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs indéfinis en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "notes": [
    "Many a prend un nom au singulier tandis que many en prend un au pluriel. Tous les deux sont utilisés seulement pour les dénombrables."
  ],
  "pos": "adj",
  "pos_title": "Adjectif indéfini",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Termes poétiques en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Many a dead sailor lies at rest below the waves.\ncf. Many dead sailors lie at rest below the waves.",
          "translation": "Maint marin mort repose sous les vagues.\ncf. Maints marins morts reposent sous les vagues."
        }
      ],
      "glosses": [
        "Maint."
      ],
      "id": "fr-many_a-en-adj-urVOnvhg",
      "tags": [
        "poetic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈmɛn.ɪ ə\\"
    }
  ],
  "tags": [
    "indefinite",
    "singular"
  ],
  "word": "many a"
}

{
  "categories": [
    "Adjectifs indéfinis en anglais",
    "anglais"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "notes": [
    "Many a prend un nom au singulier tandis que many en prend un au pluriel. Tous les deux sont utilisés seulement pour les dénombrables."
  ],
  "pos": "adj",
  "pos_title": "Adjectif indéfini",
  "senses": [
    {
      "categories": [
        "Termes poétiques en anglais"
      ],
      "examples": [
        {
          "text": "Many a dead sailor lies at rest below the waves.\ncf. Many dead sailors lie at rest below the waves.",
          "translation": "Maint marin mort repose sous les vagues.\ncf. Maints marins morts reposent sous les vagues."
        }
      ],
      "glosses": [
        "Maint."
      ],
      "tags": [
        "poetic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈmɛn.ɪ ə\\"
    }
  ],
  "tags": [
    "indefinite",
    "singular"
  ],
  "word": "many a"
}