"és tsai." meaning in Hungarian

{
  "etymology_templates": [
    {
      "args": {
        "1": "hu",
        "2": "társai",
        "3": "",
        "4": "his/her colleagues",
        "nocap": "y"
      },
      "expansion": "abbreviation of társai (“his/her colleagues”)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "From és (“and”) + abbreviation of társai (“his/her colleagues”).",
  "head_templates": [
    {
      "args": {
        "1": "hu",
        "2": "phrase",
        "head": "és tsai."
      },
      "expansion": "és tsai.",
      "name": "head"
    }
  ],
  "lang": "Hungarian",
  "lang_code": "hu",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Hungarian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Hungarian non-constituents",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "et al."
      ],
      "id": "en-és_tsai.-hu-phrase-857O3hun",
      "links": [
        [
          "et al.",
          "et al."
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˌeːʃ ˈtaːrʃɒji]"
    }
  ],
  "word": "és tsai."
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "hu",
        "2": "társai",
        "3": "",
        "4": "his/her colleagues",
        "nocap": "y"
      },
      "expansion": "abbreviation of társai (“his/her colleagues”)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "From és (“and”) + abbreviation of társai (“his/her colleagues”).",
  "head_templates": [
    {
      "args": {
        "1": "hu",
        "2": "phrase",
        "head": "és tsai."
      },
      "expansion": "és tsai.",
      "name": "head"
    }
  ],
  "lang": "Hungarian",
  "lang_code": "hu",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Hungarian abbreviations",
        "Hungarian entries with incorrect language header",
        "Hungarian lemmas",
        "Hungarian multiword terms",
        "Hungarian non-constituents",
        "Hungarian phrases",
        "Hungarian terms spelled with .",
        "Hungarian terms with IPA pronunciation",
        "Hungarian terms with manual IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "et al."
      ],
      "links": [
        [
          "et al.",
          "et al."
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˌeːʃ ˈtaːrʃɒji]"
    }
  ],
  "word": "és tsai."
}