"trial number" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
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      "expansion": "trial number",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "langcode": "en",
          "name": "Grammar",
          "orig": "en:Grammar",
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            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A grammatical number denoting a quantity of exactly three."
      ],
      "id": "en-trial_number-en-noun-J-8G-8h5",
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "grammatical",
          "grammatical"
        ],
        [
          "number",
          "number"
        ],
        [
          "denoting",
          "denote"
        ],
        [
          "quantity",
          "quantity"
        ],
        [
          "exactly",
          "exactly"
        ],
        [
          "three",
          "three"
        ]
      ],
      "raw_glosses": [
        "(grammar) A grammatical number denoting a quantity of exactly three."
      ],
      "related": [
        {
          "word": "dual number"
        }
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "translations": [
        {
          "code": "it",
          "lang": "Italian",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "triale"
        }
      ]
    }
  ],
  "word": "trial number"
}

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "trial number",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "dual number"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "Translation table header lacks gloss",
        "en:Grammar"
      ],
      "glosses": [
        "A grammatical number denoting a quantity of exactly three."
      ],
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "grammatical",
          "grammatical"
        ],
        [
          "number",
          "number"
        ],
        [
          "denoting",
          "denote"
        ],
        [
          "quantity",
          "quantity"
        ],
        [
          "exactly",
          "exactly"
        ],
        [
          "three",
          "three"
        ]
      ],
      "raw_glosses": [
        "(grammar) A grammatical number denoting a quantity of exactly three."
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "it",
      "lang": "Italian",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "triale"
    }
  ],
  "word": "trial number"
}