"ON" meaning in English

{
  "head_templates": [
    {
      "args": {},
      "expansion": "ON",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Old Norse"
        }
      ],
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Linguistics",
          "orig": "en:Linguistics",
          "parents": [
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "88 12",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Initialism of Old Norse."
      ],
      "id": "en-ON-en-name-l7jBgxyr",
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "Old Norse",
          "Old Norse#English"
        ]
      ],
      "raw_glosses": [
        "(linguistics) Initialism of Old Norse."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "extra": "a province of Canada",
          "word": "Ontario"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of Ontario, a province of Canada."
      ],
      "id": "en-ON-en-name-6TaoTQa2",
      "links": [
        [
          "Ontario",
          "Ontario#English"
        ],
        [
          "Canada",
          "Canada"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "ON"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English proper nouns",
    "English uncountable nouns"
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ON",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Old Norse"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Linguistics"
      ],
      "glosses": [
        "Initialism of Old Norse."
      ],
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "Old Norse",
          "Old Norse#English"
        ]
      ],
      "raw_glosses": [
        "(linguistics) Initialism of Old Norse."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "extra": "a province of Canada",
          "word": "Ontario"
        }
      ],
      "categories": [
        "English abbreviations",
        "English links with redundant wikilinks"
      ],
      "glosses": [
        "Abbreviation of Ontario, a province of Canada."
      ],
      "links": [
        [
          "Ontario",
          "Ontario#English"
        ],
        [
          "Canada",
          "Canada"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "ON"
}