"thro’" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Prépositions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "prep",
  "pos_title": "Préposition",
  "senses": [
    {
      "alt_of": [
        {
          "word": "through"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Termes archaïques en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Jonathan Swift, Gulliver’s Travels. Première édition, 1726. Seconde partie, page 4.",
          "text": "the Ship … made a better Way thro’ the Sea"
        }
      ],
      "glosses": [
        "Variante de through."
      ],
      "id": "fr-thro’-en-prep-nbuxfHdT",
      "tags": [
        "alt-of",
        "archaic"
      ]
    }
  ],
  "word": "thro’"
}

{
  "categories": [
    "Lemmes en anglais",
    "Prépositions en anglais",
    "anglais"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "prep",
  "pos_title": "Préposition",
  "senses": [
    {
      "alt_of": [
        {
          "word": "through"
        }
      ],
      "categories": [
        "Termes archaïques en anglais"
      ],
      "examples": [
        {
          "ref": "Jonathan Swift, Gulliver’s Travels. Première édition, 1726. Seconde partie, page 4.",
          "text": "the Ship … made a better Way thro’ the Sea"
        }
      ],
      "glosses": [
        "Variante de through."
      ],
      "tags": [
        "alt-of",
        "archaic"
      ]
    }
  ],
  "word": "thro’"
}