"tra" meaning in Dalmatian

{
  "etymology_templates": [
    {
      "args": {
        "1": "dlm",
        "2": "la",
        "3": "trēs"
      },
      "expansion": "Latin trēs",
      "name": "inh"
    }
  ],
  "etymology_text": "From Latin trēs.",
  "head_templates": [
    {
      "args": {
        "1": "dlm",
        "2": "numeral"
      },
      "expansion": "tra",
      "name": "head"
    }
  ],
  "lang": "Dalmatian",
  "lang_code": "dlm",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Dalmatian cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Dalmatian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Dalmatian entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "three"
      ],
      "id": "en-tra-dlm-num-i1udsME9",
      "links": [
        [
          "three",
          "three"
        ]
      ]
    }
  ],
  "word": "tra"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "dlm",
        "2": "la",
        "3": "trēs"
      },
      "expansion": "Latin trēs",
      "name": "inh"
    }
  ],
  "etymology_text": "From Latin trēs.",
  "head_templates": [
    {
      "args": {
        "1": "dlm",
        "2": "numeral"
      },
      "expansion": "tra",
      "name": "head"
    }
  ],
  "lang": "Dalmatian",
  "lang_code": "dlm",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Dalmatian cardinal numbers",
        "Dalmatian entries with incorrect language header",
        "Dalmatian entries with language name categories using raw markup",
        "Dalmatian lemmas",
        "Dalmatian numerals",
        "Dalmatian terms derived from Latin",
        "Dalmatian terms inherited from Latin"
      ],
      "glosses": [
        "three"
      ],
      "links": [
        [
          "three",
          "three"
        ]
      ]
    }
  ],
  "word": "tra"
}