"on the watch" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "on the watch",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "on the watch",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "alt_of": [
        {
          "word": "on watch"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
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          "parents": [],
          "source": "w"
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      "examples": [
        {
          "ref": "1861, George Eliot, chapter 21, in Silas Marner:",
          "text": "\"Come into that little brush-shop and sit down, father—they'll let you sit down,\" said Eppie, always on the watch lest one of her father's strange attacks should come on.",
          "type": "quote"
        },
        {
          "ref": "1897, Joseph Conrad, Karain: A Memoir:",
          "text": "Even when he eats and sleeps there is always one on the watch near him who has strength and weapons.",
          "type": "quote"
        },
        {
          "ref": "1924 December 1, “Peasants”, in Time:",
          "text": "His children, married and single, were ever on the watch for what they could get out of him.",
          "type": "quote"
        },
        {
          "ref": "2007, \"WEATHER UPDATE,\" WBBM780.com (Illinois), 2 Dec.",
          "text": "The department also notified its Bureau of Forestry and Electricity to be on the watch for ice on trees and power lines."
        }
      ],
      "glosses": [
        "Alternative form of on watch."
      ],
      "id": "en-on_the_watch-en-prep_phrase-wMSTaRJf",
      "links": [
        [
          "on watch",
          "on watch#English"
        ]
      ],
      "synonyms": [
        {
          "word": "on watch"
        }
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "on the watch"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "on the watch",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "on the watch",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "alt_of": [
        {
          "word": "on watch"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1861, George Eliot, chapter 21, in Silas Marner:",
          "text": "\"Come into that little brush-shop and sit down, father—they'll let you sit down,\" said Eppie, always on the watch lest one of her father's strange attacks should come on.",
          "type": "quote"
        },
        {
          "ref": "1897, Joseph Conrad, Karain: A Memoir:",
          "text": "Even when he eats and sleeps there is always one on the watch near him who has strength and weapons.",
          "type": "quote"
        },
        {
          "ref": "1924 December 1, “Peasants”, in Time:",
          "text": "His children, married and single, were ever on the watch for what they could get out of him.",
          "type": "quote"
        },
        {
          "ref": "2007, \"WEATHER UPDATE,\" WBBM780.com (Illinois), 2 Dec.",
          "text": "The department also notified its Bureau of Forestry and Electricity to be on the watch for ice on trees and power lines."
        }
      ],
      "glosses": [
        "Alternative form of on watch."
      ],
      "links": [
        [
          "on watch",
          "on watch#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "on watch"
    }
  ],
  "word": "on the watch"
}