"sent to the Tower" meaning in English

{
  "etymology_text": "Referring to the Tower of London, a famous citadel used as a prison.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "sent to the Tower",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "London",
          "orig": "en:London",
          "parents": [
            "Greater London, England",
            "England",
            "United Kingdom",
            "British Isles",
            "Europe",
            "Islands",
            "Earth",
            "Eurasia",
            "Places",
            "Nature",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "imprisoned; punished."
      ],
      "id": "en-sent_to_the_Tower-en-verb-Dmw4Gjz~",
      "links": [
        [
          "imprisoned",
          "imprisoned"
        ]
      ],
      "raw_glosses": [
        "(British, colloquial) imprisoned; punished."
      ],
      "tags": [
        "British",
        "colloquial"
      ]
    }
  ],
  "word": "sent to the Tower"
}

{
  "etymology_text": "Referring to the Tower of London, a famous citadel used as a prison.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "sent to the Tower",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "British English",
        "English colloquialisms",
        "English entries with incorrect language header",
        "English non-lemma forms",
        "English verb forms",
        "Pages with 1 entry",
        "Pages with entries",
        "en:London"
      ],
      "glosses": [
        "imprisoned; punished."
      ],
      "links": [
        [
          "imprisoned",
          "imprisoned"
        ]
      ],
      "raw_glosses": [
        "(British, colloquial) imprisoned; punished."
      ],
      "tags": [
        "British",
        "colloquial"
      ]
    }
  ],
  "word": "sent to the Tower"
}