"listen in" meaning in All languages combined

{
  "categories": [
    {
      "kind": "other",
      "name": "英語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語 不変化詞\"in\"を伴う句動詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語 動詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語 句動詞",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "listen",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "in"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "動詞",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "英語 例文あり",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Do you mind if I listen in on your meeting tomorrow?",
          "translation": "明日の会議を傍聴してかまいませんか。"
        }
      ],
      "glosses": [
        "傍聴する。"
      ],
      "id": "ja-listen_in-en-verb-ovKAfIb8"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "英語 例文あり",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "You should close the door for conversations like that. You never know who might be listening in.",
          "translation": "そういう話をするときはドアを閉めなさい。誰かが立ち聞きしてるかもしれないじゃないか。"
        },
        {
          "text": "類義語: eavesdrop"
        }
      ],
      "glosses": [
        "立ち聞きする。盗聴する。"
      ],
      "id": "ja-listen_in-en-verb-MqWe-l-3"
    }
  ],
  "word": "listen in"
}

{
  "categories": [
    "英語",
    "英語 不変化詞\"in\"を伴う句動詞",
    "英語 動詞",
    "英語 句動詞"
  ],
  "forms": [
    {
      "form": "listen",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "in"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "動詞",
  "senses": [
    {
      "categories": [
        "英語 例文あり"
      ],
      "examples": [
        {
          "text": "Do you mind if I listen in on your meeting tomorrow?",
          "translation": "明日の会議を傍聴してかまいませんか。"
        }
      ],
      "glosses": [
        "傍聴する。"
      ]
    },
    {
      "categories": [
        "英語 例文あり"
      ],
      "examples": [
        {
          "text": "You should close the door for conversations like that. You never know who might be listening in.",
          "translation": "そういう話をするときはドアを閉めなさい。誰かが立ち聞きしてるかもしれないじゃないか。"
        },
        {
          "text": "類義語: eavesdrop"
        }
      ],
      "glosses": [
        "立ち聞きする。盗聴する。"
      ]
    }
  ],
  "word": "listen in"
}