"OP" meaning in Englisch

{
  "antonyms": [
    {
      "sense_index": "7",
      "word": "closing"
    },
    {
      "sense_index": "7",
      "word": "ED"
    },
    {
      "sense_index": "7",
      "word": "ending"
    },
    {
      "sense_index": "7",
      "word": "ending theme"
    },
    {
      "sense_index": "7",
      "word": "extro"
    },
    {
      "sense_index": "7",
      "word": "outro"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Abkürzung (Englisch)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anagramm sortiert (Englisch)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Englisch",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Rückläufige Wörterliste (Englisch)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Siehe auch",
      "orig": "siehe auch",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "O.P.",
      "sense_index": "1, 2",
      "tags": [
        "variant"
      ]
    }
  ],
  "lang": "Englisch",
  "lang_code": "en",
  "pos": "abbrev",
  "senses": [
    {
      "glosses": [
        "observation post"
      ],
      "id": "de-OP-en-abbrev-FYncuRnA",
      "sense_index": "1"
    },
    {
      "glosses": [
        "Ordo Praedicatorum (the Dominicans)"
      ],
      "id": "de-OP-en-abbrev-Uc-TIaWC",
      "sense_index": "2"
    },
    {
      "glosses": [
        "organophosphate"
      ],
      "id": "de-OP-en-abbrev-2AYQUrWU",
      "sense_index": "3"
    },
    {
      "glosses": [
        "original post: erste Nachricht (bzw. das originale Dargebotene)"
      ],
      "id": "de-OP-en-abbrev-vV7Os1SD",
      "sense_index": "4"
    },
    {
      "glosses": [
        "original poster: Schreiber der ersten Nachricht [4]"
      ],
      "id": "de-OP-en-abbrev-6uI~4L9a",
      "sense_index": "5"
    },
    {
      "glosses": [
        "overpowered: verbreitet in der gaming scene"
      ],
      "id": "de-OP-en-abbrev-33tv-bVp",
      "sense_index": "6"
    },
    {
      "examples": [
        {
          "ref": "uhsieh: いきものがかり – 流星ミラクル (Ryuusei Miracle)",
          "text": "„I didn't realize that it was an OP theme for an anime series when I first got the single[.]“"
        }
      ],
      "glosses": [
        "opening (respectively opening theme), intro — Vorspann, Intro"
      ],
      "id": "de-OP-en-abbrev-3rqvMHiI",
      "sense_index": "7"
    },
    {
      "glosses": [
        "One Piece (Manga- und Animereihe)"
      ],
      "id": "de-OP-en-abbrev-tgwKbNE9",
      "sense_index": "8"
    },
    {
      "glosses": [
        "operator"
      ],
      "id": "de-OP-en-abbrev-BuVbYzSB",
      "sense_index": "9"
    }
  ],
  "tags": [
    "abbreviation"
  ],
  "word": "OP"
}

{
  "antonyms": [
    {
      "sense_index": "7",
      "word": "closing"
    },
    {
      "sense_index": "7",
      "word": "ED"
    },
    {
      "sense_index": "7",
      "word": "ending"
    },
    {
      "sense_index": "7",
      "word": "ending theme"
    },
    {
      "sense_index": "7",
      "word": "extro"
    },
    {
      "sense_index": "7",
      "word": "outro"
    }
  ],
  "categories": [
    "Abkürzung (Englisch)",
    "Anagramm sortiert (Englisch)",
    "Englisch",
    "Rückläufige Wörterliste (Englisch)",
    "siehe auch"
  ],
  "forms": [
    {
      "form": "O.P.",
      "sense_index": "1, 2",
      "tags": [
        "variant"
      ]
    }
  ],
  "lang": "Englisch",
  "lang_code": "en",
  "pos": "abbrev",
  "senses": [
    {
      "glosses": [
        "observation post"
      ],
      "sense_index": "1"
    },
    {
      "glosses": [
        "Ordo Praedicatorum (the Dominicans)"
      ],
      "sense_index": "2"
    },
    {
      "glosses": [
        "organophosphate"
      ],
      "sense_index": "3"
    },
    {
      "glosses": [
        "original post: erste Nachricht (bzw. das originale Dargebotene)"
      ],
      "sense_index": "4"
    },
    {
      "glosses": [
        "original poster: Schreiber der ersten Nachricht [4]"
      ],
      "sense_index": "5"
    },
    {
      "glosses": [
        "overpowered: verbreitet in der gaming scene"
      ],
      "sense_index": "6"
    },
    {
      "examples": [
        {
          "ref": "uhsieh: いきものがかり – 流星ミラクル (Ryuusei Miracle)",
          "text": "„I didn't realize that it was an OP theme for an anime series when I first got the single[.]“"
        }
      ],
      "glosses": [
        "opening (respectively opening theme), intro — Vorspann, Intro"
      ],
      "sense_index": "7"
    },
    {
      "glosses": [
        "One Piece (Manga- und Animereihe)"
      ],
      "sense_index": "8"
    },
    {
      "glosses": [
        "operator"
      ],
      "sense_index": "9"
    }
  ],
  "tags": [
    "abbreviation"
  ],
  "word": "OP"
}