"mercyer" meaning in Moyen français

{
  "categories": [
    {
      "kind": "other",
      "name": "Verbes en moyen français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Moyen français",
      "orig": "moyen français",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Moyen français",
  "lang_code": "frm",
  "pos": "verb",
  "pos_title": "Verbe",
  "senses": [
    {
      "alt_of": [
        {
          "word": "mercier"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en moyen français",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en moyen français à traduire",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Les miracles de Nostre Dame par personnages,XIVᵉ siècle.",
          "text": "Je te mercy, tresdoulce dame"
        }
      ],
      "glosses": [
        "Variante de mercier."
      ],
      "id": "fr-mercyer-frm-verb-Xhz4FwLy",
      "tags": [
        "alt-of"
      ]
    }
  ],
  "word": "mercyer"
}

{
  "categories": [
    "Verbes en moyen français",
    "moyen français"
  ],
  "lang": "Moyen français",
  "lang_code": "frm",
  "pos": "verb",
  "pos_title": "Verbe",
  "senses": [
    {
      "alt_of": [
        {
          "word": "mercier"
        }
      ],
      "categories": [
        "Exemples en moyen français",
        "Exemples en moyen français à traduire"
      ],
      "examples": [
        {
          "ref": "Les miracles de Nostre Dame par personnages,XIVᵉ siècle.",
          "text": "Je te mercy, tresdoulce dame"
        }
      ],
      "glosses": [
        "Variante de mercier."
      ],
      "tags": [
        "alt-of"
      ]
    }
  ],
  "word": "mercyer"
}