"poy plus poy moins" meaning in Moyen français

{
  "categories": [
    {
      "kind": "other",
      "name": "Adverbes en moyen français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Compositions en moyen français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Moyen français",
      "orig": "moyen français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de poy, plus, poy et moins."
  ],
  "lang": "Moyen français",
  "lang_code": "frm",
  "pos": "adv",
  "pos_title": "Adverbe",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en moyen français",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Plus ou moins, à peu près."
      ],
      "id": "fr-poy_plus_poy_moins-frm-adv-3BRCBg9r"
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "poy plus poy moins"
}

{
  "categories": [
    "Adverbes en moyen français",
    "Compositions en moyen français",
    "moyen français"
  ],
  "etymology_texts": [
    "Composé de poy, plus, poy et moins."
  ],
  "lang": "Moyen français",
  "lang_code": "frm",
  "pos": "adv",
  "pos_title": "Adverbe",
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en moyen français"
      ],
      "glosses": [
        "Plus ou moins, à peu près."
      ]
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "poy plus poy moins"
}