"первым делом" meaning in Russian

{
  "forms": [
    {
      "form": "пе́рвым де́лом",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pérvym délom",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "пе́рвым де́лом"
      },
      "expansion": "пе́рвым де́лом • (pérvym délom)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_english_offsets": [
            [
              58,
              63
            ]
          ],
          "bold_text_offsets": [
            [
              60,
              74
            ]
          ],
          "english": "Dismissing my cabman, I went in at the familiar gates and first turned along an avenue leading to a little stone summer-house which I had been fond of in my childhood.",
          "ref": "1888, Антон Чехов [Anton Chekhov], Огни, Санкт-Петербург: Северный вестник; English translation from Constance Garnett, transl., Lights, (Please provide a date or year):",
          "roman": "Otpustív svojevó izvózčika, ja vošól v znakómyje voróta i pérvym délom naprávilsja po alléje k nebolʹšój kámennoj besédke, kotóruju ljubíl v détstve.",
          "text": "Отпусти́в своего́ изво́зчика, я вошёл в знако́мые воро́та и пе́рвым де́лом напра́вился по алле́е к небольшо́й ка́менной бесе́дке, кото́рую люби́л в де́тстве.",
          "type": "quote"
        }
      ],
      "glosses": [
        "first, in the first place"
      ],
      "id": "en-первым_делом-ru-adv-RE0HJ~O~",
      "links": [
        [
          "first",
          "first"
        ],
        [
          "in the first place",
          "in the first place"
        ]
      ],
      "synonyms": [
        {
          "word": "в пе́рвую о́чередь"
        },
        {
          "word": "пре́жде всего́"
        },
        {
          "word": "снача́ла"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈpʲervɨm ˈdʲeɫəm]"
    }
  ],
  "word": "первым делом"
}

{
  "forms": [
    {
      "form": "пе́рвым де́лом",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pérvym délom",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "пе́рвым де́лом"
      },
      "expansion": "пе́рвым де́лом • (pérvym délom)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian adverbs",
        "Russian entries with incorrect language header",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian terms with IPA pronunciation",
        "Russian terms with quotations"
      ],
      "examples": [
        {
          "bold_english_offsets": [
            [
              58,
              63
            ]
          ],
          "bold_text_offsets": [
            [
              60,
              74
            ]
          ],
          "english": "Dismissing my cabman, I went in at the familiar gates and first turned along an avenue leading to a little stone summer-house which I had been fond of in my childhood.",
          "ref": "1888, Антон Чехов [Anton Chekhov], Огни, Санкт-Петербург: Северный вестник; English translation from Constance Garnett, transl., Lights, (Please provide a date or year):",
          "roman": "Otpustív svojevó izvózčika, ja vošól v znakómyje voróta i pérvym délom naprávilsja po alléje k nebolʹšój kámennoj besédke, kotóruju ljubíl v détstve.",
          "text": "Отпусти́в своего́ изво́зчика, я вошёл в знако́мые воро́та и пе́рвым де́лом напра́вился по алле́е к небольшо́й ка́менной бесе́дке, кото́рую люби́л в де́тстве.",
          "type": "quote"
        }
      ],
      "glosses": [
        "first, in the first place"
      ],
      "links": [
        [
          "first",
          "first"
        ],
        [
          "in the first place",
          "in the first place"
        ]
      ],
      "synonyms": [
        {
          "word": "в пе́рвую о́чередь"
        },
        {
          "word": "пре́жде всего́"
        },
        {
          "word": "снача́ла"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈpʲervɨm ˈdʲeɫəm]"
    }
  ],
  "word": "первым делом"
}