"pärkāᵤ" meaning in Tocharian B

{
  "etymology_templates": [
    {
      "args": {
        "1": "txb",
        "2": "ira"
      },
      "expansion": "Iranian",
      "name": "bor"
    },
    {
      "args": {
        "1": "xto",
        "2": "pärko"
      },
      "expansion": "Tocharian A pärko",
      "name": "cog"
    },
    {
      "args": {
        "1": "xcl",
        "2": "պարգև"
      },
      "expansion": "Old Armenian պարգև (pargew)",
      "name": "cog"
    }
  ],
  "etymology_text": "An Iranian borrowing. Cognate with Tocharian A pärko. See Old Armenian պարգև (pargew) for more.",
  "head_templates": [
    {
      "args": {
        "1": "txb",
        "2": "noun"
      },
      "expansion": "pärkāᵤ",
      "name": "head"
    }
  ],
  "lang": "Tocharian B",
  "lang_code": "txb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Tocharian B entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "advantage, benefit"
      ],
      "id": "en-pärkāᵤ-txb-noun-T3Hs8rIQ",
      "links": [
        [
          "advantage",
          "advantage"
        ],
        [
          "benefit",
          "benefit"
        ]
      ]
    }
  ],
  "word": "pärkāᵤ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "txb",
        "2": "ira"
      },
      "expansion": "Iranian",
      "name": "bor"
    },
    {
      "args": {
        "1": "xto",
        "2": "pärko"
      },
      "expansion": "Tocharian A pärko",
      "name": "cog"
    },
    {
      "args": {
        "1": "xcl",
        "2": "պարգև"
      },
      "expansion": "Old Armenian պարգև (pargew)",
      "name": "cog"
    }
  ],
  "etymology_text": "An Iranian borrowing. Cognate with Tocharian A pärko. See Old Armenian պարգև (pargew) for more.",
  "head_templates": [
    {
      "args": {
        "1": "txb",
        "2": "noun"
      },
      "expansion": "pärkāᵤ",
      "name": "head"
    }
  ],
  "lang": "Tocharian B",
  "lang_code": "txb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Tocharian B entries with incorrect language header",
        "Tocharian B lemmas",
        "Tocharian B nouns",
        "Tocharian B terms borrowed from Iranian languages",
        "Tocharian B terms derived from Iranian languages",
        "Tocharian B terms spelled with ᵤ"
      ],
      "glosses": [
        "advantage, benefit"
      ],
      "links": [
        [
          "advantage",
          "advantage"
        ],
        [
          "benefit",
          "benefit"
        ]
      ]
    }
  ],
  "word": "pärkāᵤ"
}