"show-out" meaning in English

{
  "forms": [
    {
      "form": "show-outs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "show-out (plural show-outs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2007, Paul Willetts, North Soho 999: A True Story of Gun-crime in 1940s London, page 101",
          "text": "On entering the venue, the detective had to avoid approaching or acknowledging whoever he was meeting. First, the detective had to wait for the 'show out'. This consisted of a brief nod, signalling that there was nobody around who might blow the informer's cover.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A surreptitious signal made by an informer to the police contact, indicating that it is safe to approach."
      ],
      "id": "en-show-out-en-noun-ZWvZzkn~",
      "links": [
        [
          "surreptitious",
          "surreptitious"
        ],
        [
          "signal",
          "signal"
        ],
        [
          "informer",
          "informer"
        ],
        [
          "police",
          "police"
        ],
        [
          "contact",
          "contact"
        ]
      ]
    }
  ],
  "word": "show-out"
}

{
  "forms": [
    {
      "form": "show-outs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "show-out (plural show-outs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2007, Paul Willetts, North Soho 999: A True Story of Gun-crime in 1940s London, page 101",
          "text": "On entering the venue, the detective had to avoid approaching or acknowledging whoever he was meeting. First, the detective had to wait for the 'show out'. This consisted of a brief nod, signalling that there was nobody around who might blow the informer's cover.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A surreptitious signal made by an informer to the police contact, indicating that it is safe to approach."
      ],
      "links": [
        [
          "surreptitious",
          "surreptitious"
        ],
        [
          "signal",
          "signal"
        ],
        [
          "informer",
          "informer"
        ],
        [
          "police",
          "police"
        ],
        [
          "contact",
          "contact"
        ]
      ]
    }
  ],
  "word": "show-out"
}