"first shift" meaning in English

{
  "forms": [
    {
      "form": "first shifts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "first shift (plural first shifts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "45 55",
          "kind": "topical",
          "langcode": "en",
          "name": "Night",
          "orig": "en:Night",
          "parents": [
            "Darkness",
            "Time",
            "Light",
            "All topics",
            "Energy",
            "Fundamental",
            "Nature"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Near-synonym: day shift (often synonymous)"
        }
      ],
      "glosses": [
        "A regularly scheduled period of work, being the first one in the standard working day of any particular company: usually during the day; often the first of three (with 24/3 = 8 hours long), and often from 8:00 a.m. to 4:00 p.m.; sometimes the first of two, and sometimes with other time values."
      ],
      "id": "en-first_shift-en-noun-S1RJlsSU",
      "links": [
        [
          "working day",
          "working day"
        ]
      ],
      "related": [
        {
          "_dis1": "100 0",
          "word": "shiftwork"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "39 61",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "38 62",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "35 65",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "45 55",
          "kind": "topical",
          "langcode": "en",
          "name": "Night",
          "orig": "en:Night",
          "parents": [
            "Darkness",
            "Time",
            "Light",
            "All topics",
            "Energy",
            "Fundamental",
            "Nature"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Near-synonym: day shift (often synonymous)"
        }
      ],
      "glosses": [
        "A group of workers who work during this time slot."
      ],
      "id": "en-first_shift-en-noun-rv8YtkD7",
      "links": [
        [
          "worker",
          "worker"
        ],
        [
          "time slot",
          "time slot"
        ]
      ]
    }
  ],
  "word": "first shift"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Night"
  ],
  "forms": [
    {
      "form": "first shifts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "first shift (plural first shifts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "shiftwork"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "text": "Near-synonym: day shift (often synonymous)"
        }
      ],
      "glosses": [
        "A regularly scheduled period of work, being the first one in the standard working day of any particular company: usually during the day; often the first of three (with 24/3 = 8 hours long), and often from 8:00 a.m. to 4:00 p.m.; sometimes the first of two, and sometimes with other time values."
      ],
      "links": [
        [
          "working day",
          "working day"
        ]
      ]
    },
    {
      "examples": [
        {
          "text": "Near-synonym: day shift (often synonymous)"
        }
      ],
      "glosses": [
        "A group of workers who work during this time slot."
      ],
      "links": [
        [
          "worker",
          "worker"
        ],
        [
          "time slot",
          "time slot"
        ]
      ]
    }
  ],
  "word": "first shift"
}