"шасцю" meaning in Belarusian

{
  "forms": [
    {
      "form": "шасцю́",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "šascjú",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "be",
        "2": "numeral form",
        "head": "шасцю́"
      },
      "expansion": "шасцю́ • (šascjú)",
      "name": "head"
    }
  ],
  "lang": "Belarusian",
  "lang_code": "be",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Belarusian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "šescʹ",
          "word": "шэсць"
        }
      ],
      "glosses": [
        "instrumental plural of шэсць (šescʹ)"
      ],
      "id": "en-шасцю-be-num-uDsD2MSj",
      "links": [
        [
          "шэсць",
          "шэсць#Belarusian"
        ]
      ],
      "tags": [
        "form-of",
        "instrumental",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʂaˈsʲt͡sʲu]"
    }
  ],
  "word": "шасцю"
}

{
  "forms": [
    {
      "form": "шасцю́",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "šascjú",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "be",
        "2": "numeral form",
        "head": "шасцю́"
      },
      "expansion": "шасцю́ • (šascjú)",
      "name": "head"
    }
  ],
  "lang": "Belarusian",
  "lang_code": "be",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Belarusian entries with incorrect language header",
        "Belarusian non-lemma forms",
        "Belarusian numeral forms",
        "Belarusian terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "šescʹ",
          "word": "шэсць"
        }
      ],
      "glosses": [
        "instrumental plural of шэсць (šescʹ)"
      ],
      "links": [
        [
          "шэсць",
          "шэсць#Belarusian"
        ]
      ],
      "tags": [
        "form-of",
        "instrumental",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʂaˈsʲt͡sʲu]"
    }
  ],
  "word": "шасцю"
}