"pin camera" meaning in English

{
  "forms": [
    {
      "form": "pin cameras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pin camera (plural pin cameras)",
      "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": "2013, Kitty Pilgrim, The Stolen Chalice, page 349",
          "text": "They were able to see the interior of the opera house through a pin camera in their agent's lapel.",
          "type": "quotation"
        },
        {
          "ref": "2015, O. N. Stefan, Sleep then my Princess",
          "text": "Earlier, he'd positioned a pin camera on the wall adjacent to stream on movement to his cell.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A microscopic camera used for espionage."
      ],
      "id": "en-pin_camera-en-noun-KvrMrxN0",
      "links": [
        [
          "microscopic",
          "microscopic"
        ],
        [
          "camera",
          "camera"
        ],
        [
          "espionage",
          "espionage"
        ]
      ],
      "related": [
        {
          "word": "pinhole camera"
        }
      ]
    }
  ],
  "word": "pin camera"
}

{
  "forms": [
    {
      "form": "pin cameras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pin camera (plural pin cameras)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "pinhole camera"
    }
  ],
  "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": "2013, Kitty Pilgrim, The Stolen Chalice, page 349",
          "text": "They were able to see the interior of the opera house through a pin camera in their agent's lapel.",
          "type": "quotation"
        },
        {
          "ref": "2015, O. N. Stefan, Sleep then my Princess",
          "text": "Earlier, he'd positioned a pin camera on the wall adjacent to stream on movement to his cell.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A microscopic camera used for espionage."
      ],
      "links": [
        [
          "microscopic",
          "microscopic"
        ],
        [
          "camera",
          "camera"
        ],
        [
          "espionage",
          "espionage"
        ]
      ]
    }
  ],
  "word": "pin camera"
}