"-ere" meaning in Ancien français

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en ancien français issus d’un mot en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Suffixes en ancien français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ancien français",
      "orig": "ancien français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du latin -ator. À comparer avec -aire en occitan."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "suffix",
  "pos_title": "Suffixe",
  "related": [
    {
      "word": "-eres"
    },
    {
      "word": "-erres"
    },
    {
      "word": "-erre"
    },
    {
      "word": "-iere"
    },
    {
      "word": "-ieres"
    },
    {
      "word": "-ierre"
    },
    {
      "word": "-ierres"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "text": "chanteor → chantere^([1])"
        }
      ],
      "glosses": [
        "Sert à former le cas sujet masculin singulier des noms et des adjectifs qui ont le suffixe -eor."
      ],
      "id": "fr--ere-fro-suffix-7IEaj2hz"
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "-ere"
}

{
  "categories": [
    "Mots en ancien français issus d’un mot en latin",
    "Suffixes en ancien français",
    "ancien français"
  ],
  "etymology_texts": [
    "Du latin -ator. À comparer avec -aire en occitan."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "suffix",
  "pos_title": "Suffixe",
  "related": [
    {
      "word": "-eres"
    },
    {
      "word": "-erres"
    },
    {
      "word": "-erre"
    },
    {
      "word": "-iere"
    },
    {
      "word": "-ieres"
    },
    {
      "word": "-ierre"
    },
    {
      "word": "-ierres"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "text": "chanteor → chantere^([1])"
        }
      ],
      "glosses": [
        "Sert à former le cas sujet masculin singulier des noms et des adjectifs qui ont le suffixe -eor."
      ]
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "-ere"
}