"grade thirteen" meaning in All languages combined

{
  "forms": [
    {
      "form": "grade 13",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "grade thirteen",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Thirteenth grade."
      ],
      "id": "en-grade_thirteen-en-noun-QdroooUZ",
      "links": [
        [
          "Thirteenth grade",
          "thirteenth grade"
        ]
      ],
      "raw_glosses": [
        "(Canada, historical) Thirteenth grade."
      ],
      "tags": [
        "Canada",
        "historical"
      ]
    }
  ],
  "word": "grade thirteen"
}

{
  "forms": [
    {
      "form": "grade 13",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "grade thirteen",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Canadian English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms with historical senses",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Thirteenth grade."
      ],
      "links": [
        [
          "Thirteenth grade",
          "thirteenth grade"
        ]
      ],
      "raw_glosses": [
        "(Canada, historical) Thirteenth grade."
      ],
      "tags": [
        "Canada",
        "historical"
      ]
    }
  ],
  "word": "grade thirteen"
}