"не спускать глаз" meaning in Russian

{
  "forms": [
    {
      "form": "не спуска́ть глаз",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ne spuskátʹ glaz",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "не спуска́ть глаз",
        "2": "impf"
      },
      "expansion": "не спуска́ть глаз • (ne spuskátʹ glaz) impf",
      "name": "ru-verb"
    }
  ],
  "inflection_templates": [
    {
      "args": {
        "1": "спуска́ть"
      },
      "name": "ru-conj-verb-see"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "verb",
  "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": [
            [
              156,
              169
            ],
            [
              174,
              182
            ]
          ],
          "bold_text_offsets": [
            [
              167,
              179
            ],
            [
              188,
              192
            ]
          ],
          "english": "`Sleep well!' Mashurina's voice called through the door. 'I am next door to you.'\n'Good-night,' answered Nezhdanov, and then it came into his mind that she had not taken her eyes off him all the evening.",
          "ref": "1877, Иван Тургенев [Ivan Turgenev], “Часть первая. XI”, in Новь; English translation from Constance Garnett, transl., Virgin Soil, 1920:",
          "roman": "— Spokójnoj nóči! — razdálsja za dvérʹju gólos Mašúrinoj, — ja — váša sosédka.\n— Proščájte, — otvečál Neždánov i tút že vspómnil, što oná v tečénije véčera ne spuskála s nevó glaz.",
          "text": "— Споко́йной но́чи! — разда́лся за две́рью го́лос Машу́риной, — я — ва́ша сосе́дка.\n— Проща́йте, — отвеча́л Нежда́нов и ту́т же вспо́мнил, что она́ в тече́ние ве́чера не спуска́ла с него́ глаз.",
          "type": "quote"
        }
      ],
      "glosses": [
        "to keep an eye on"
      ],
      "id": "en-не_спускать_глаз-ru-verb-rfrPef-K",
      "links": [
        [
          "keep an eye on",
          "keep an eye on"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) to keep an eye on"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪ‿spʊˈskadʲ ɡɫas]"
    }
  ],
  "word": "не спускать глаз"
}

{
  "forms": [
    {
      "form": "не спуска́ть глаз",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ne spuskátʹ glaz",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "не спуска́ть глаз",
        "2": "impf"
      },
      "expansion": "не спуска́ть глаз • (ne spuskátʹ glaz) impf",
      "name": "ru-verb"
    }
  ],
  "inflection_templates": [
    {
      "args": {
        "1": "спуска́ть"
      },
      "name": "ru-conj-verb-see"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian entries with incorrect language header",
        "Russian idioms",
        "Russian imperfective verbs",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian terms with IPA pronunciation",
        "Russian terms with quotations",
        "Russian verbs"
      ],
      "examples": [
        {
          "bold_english_offsets": [
            [
              156,
              169
            ],
            [
              174,
              182
            ]
          ],
          "bold_text_offsets": [
            [
              167,
              179
            ],
            [
              188,
              192
            ]
          ],
          "english": "`Sleep well!' Mashurina's voice called through the door. 'I am next door to you.'\n'Good-night,' answered Nezhdanov, and then it came into his mind that she had not taken her eyes off him all the evening.",
          "ref": "1877, Иван Тургенев [Ivan Turgenev], “Часть первая. XI”, in Новь; English translation from Constance Garnett, transl., Virgin Soil, 1920:",
          "roman": "— Spokójnoj nóči! — razdálsja za dvérʹju gólos Mašúrinoj, — ja — váša sosédka.\n— Proščájte, — otvečál Neždánov i tút že vspómnil, što oná v tečénije véčera ne spuskála s nevó glaz.",
          "text": "— Споко́йной но́чи! — разда́лся за две́рью го́лос Машу́риной, — я — ва́ша сосе́дка.\n— Проща́йте, — отвеча́л Нежда́нов и ту́т же вспо́мнил, что она́ в тече́ние ве́чера не спуска́ла с него́ глаз.",
          "type": "quote"
        }
      ],
      "glosses": [
        "to keep an eye on"
      ],
      "links": [
        [
          "keep an eye on",
          "keep an eye on"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) to keep an eye on"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪ‿spʊˈskadʲ ɡɫas]"
    }
  ],
  "word": "не спускать глаз"
}