"ST" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "symbol",
  "pos_id": "fr-symb-1",
  "pos_title": "Symbole",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de la marine",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Code du quartier d’immatriculation de Sète."
      ],
      "id": "fr-ST-fr-symbol-s7uzX5Z0",
      "topics": [
        "nautical"
      ]
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "ST"
}

{
  "categories": [
    "Lemmes en anglais",
    "Noms communs en anglais",
    "français"
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "symbol",
  "pos_id": "fr-symb-1",
  "pos_title": "Symbole",
  "senses": [
    {
      "categories": [
        "Lexique en français de la marine"
      ],
      "glosses": [
        "Code du quartier d’immatriculation de Sète."
      ],
      "topics": [
        "nautical"
      ]
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "ST"
}