"תרתין" meaning in Aramaic

{
  "forms": [
    {
      "form": "תַּרְתֵּין",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "tartēn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "arc",
        "2": "numeral",
        "g": "f",
        "head1": "תַּרְתֵּין",
        "tr": "tartēn"
      },
      "expansion": "תַּרְתֵּין • (tartēn) f",
      "name": "head"
    }
  ],
  "lang": "Aramaic",
  "lang_code": "arc",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Aramaic cardinal numbers",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Aramaic 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"
        }
      ],
      "form_of": [
        {
          "extra": "trēn, “two”",
          "word": "תְּרֵין"
        }
      ],
      "glosses": [
        "feminine of תְּרֵין (trēn, “two”)"
      ],
      "id": "en-תרתין-arc-num--vJ8d3WO",
      "links": [
        [
          "תְּרֵין",
          "תרין#Aramaic"
        ]
      ],
      "tags": [
        "feminine",
        "form-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tar.teːn/"
    }
  ],
  "word": "תרתין"
}

{
  "forms": [
    {
      "form": "תַּרְתֵּין",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "tartēn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "arc",
        "2": "numeral",
        "g": "f",
        "head1": "תַּרְתֵּין",
        "tr": "tartēn"
      },
      "expansion": "תַּרְתֵּין • (tartēn) f",
      "name": "head"
    }
  ],
  "lang": "Aramaic",
  "lang_code": "arc",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Aramaic cardinal numbers",
        "Aramaic entries with incorrect language header",
        "Aramaic lemmas",
        "Aramaic numerals",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "trēn, “two”",
          "word": "תְּרֵין"
        }
      ],
      "glosses": [
        "feminine of תְּרֵין (trēn, “two”)"
      ],
      "links": [
        [
          "תְּרֵין",
          "תרין#Aramaic"
        ]
      ],
      "tags": [
        "feminine",
        "form-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tar.teːn/"
    }
  ],
  "word": "תרתין"
}