"à" meaning in Middle French

{
  "head_templates": [
    {
      "args": {
        "1": "frm",
        "2": "preposition"
      },
      "expansion": "à",
      "name": "head"
    }
  ],
  "lang": "Middle French",
  "lang_code": "frm",
  "pos": "prep",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "at; to",
          "word": "a"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Middle French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Middle French prepositions",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "They are being sold in Paris",
          "text": "1537, Cicero (original author), Epistres familiaires traduictz de latin en francois et nouvellement imprimez link\non les vend à Paris",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of a: at; to"
      ],
      "id": "en-à-frm-prep-FLx0IgtS",
      "links": [
        [
          "a",
          "a#Middle French"
        ],
        [
          "at",
          "at"
        ],
        [
          "to",
          "to"
        ]
      ],
      "qualifier": "16th century onwards",
      "raw_glosses": [
        "(16th century onwards) Alternative form of a: at; to"
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "à"
}

{
  "head_templates": [
    {
      "args": {
        "1": "frm",
        "2": "preposition"
      },
      "expansion": "à",
      "name": "head"
    }
  ],
  "lang": "Middle French",
  "lang_code": "frm",
  "pos": "prep",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "at; to",
          "word": "a"
        }
      ],
      "categories": [
        "Middle French entries with incorrect language header",
        "Middle French lemmas",
        "Middle French prepositions",
        "Middle French terms with quotations"
      ],
      "examples": [
        {
          "english": "They are being sold in Paris",
          "text": "1537, Cicero (original author), Epistres familiaires traduictz de latin en francois et nouvellement imprimez link\non les vend à Paris",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of a: at; to"
      ],
      "links": [
        [
          "a",
          "a#Middle French"
        ],
        [
          "at",
          "at"
        ],
        [
          "to",
          "to"
        ]
      ],
      "qualifier": "16th century onwards",
      "raw_glosses": [
        "(16th century onwards) Alternative form of a: at; to"
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "à"
}