"poy plus poy moins" meaning in Middle French

{
  "head_templates": [
    {
      "args": {
        "1": "frm",
        "2": "adverb",
        "head": "poy plus poy moins"
      },
      "expansion": "poy plus poy moins",
      "name": "head"
    }
  ],
  "lang": "Middle French",
  "lang_code": "frm",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Middle French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "But underneath everything, she [the mare] had a horrible tail, for it was, more or less, as big as […]",
          "ref": "1534, François Rabelais, Gargantua",
          "text": "Mais sus tout avoit la queue horrible, car elle estoit, poy plus poy moins, grosse comme la pile Sainct Mars",
          "type": "quotation"
        }
      ],
      "glosses": [
        "more or less; roughly; approximately"
      ],
      "id": "en-poy_plus_poy_moins-frm-adv-jRCQlZrf",
      "links": [
        [
          "more or less",
          "more or less"
        ],
        [
          "roughly",
          "roughly"
        ],
        [
          "approximately",
          "approximately"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) more or less; roughly; approximately"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "poy plus poy moins"
}

{
  "head_templates": [
    {
      "args": {
        "1": "frm",
        "2": "adverb",
        "head": "poy plus poy moins"
      },
      "expansion": "poy plus poy moins",
      "name": "head"
    }
  ],
  "lang": "Middle French",
  "lang_code": "frm",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Middle French adverbs",
        "Middle French entries with incorrect language header",
        "Middle French idioms",
        "Middle French lemmas",
        "Middle French multiword terms",
        "Middle French terms with quotations",
        "Middle French terms with redundant head parameter"
      ],
      "examples": [
        {
          "english": "But underneath everything, she [the mare] had a horrible tail, for it was, more or less, as big as […]",
          "ref": "1534, François Rabelais, Gargantua",
          "text": "Mais sus tout avoit la queue horrible, car elle estoit, poy plus poy moins, grosse comme la pile Sainct Mars",
          "type": "quotation"
        }
      ],
      "glosses": [
        "more or less; roughly; approximately"
      ],
      "links": [
        [
          "more or less",
          "more or less"
        ],
        [
          "roughly",
          "roughly"
        ],
        [
          "approximately",
          "approximately"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) more or less; roughly; approximately"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "poy plus poy moins"
}