"key on" meaning in English

{
  "forms": [
    {
      "form": "keys on",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "keying on",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "keyed on",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "keyed on",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "key on (third-person singular simple present keys on, present participle keying on, simple past and past participle keyed on)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sports",
          "orig": "en:Sports",
          "parents": [
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "88 12",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "79 21",
          "kind": "other",
          "name": "English phrasal verbs formed with \"on\"",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "85 15",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "87 13",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "To anticipate a play by watching and analyzing the movements of one's opponent(s)."
      ],
      "id": "en-key_on-en-verb-PmOETms6",
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "anticipate",
          "anticipate"
        ],
        [
          "play",
          "play"
        ],
        [
          "watch",
          "watch"
        ],
        [
          "analyzing",
          "analyze"
        ],
        [
          "movement",
          "movement"
        ],
        [
          "opponent",
          "opponent"
        ]
      ],
      "raw_glosses": [
        "(sports) To anticipate a play by watching and analyzing the movements of one's opponent(s)."
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "text": "She keyed me on to the plan.",
          "type": "example"
        }
      ],
      "glosses": [
        "To instruct or make (someone) aware of (something)."
      ],
      "id": "en-key_on-en-verb-dbt3SMXS",
      "links": [
        [
          "instruct",
          "instruct"
        ],
        [
          "make",
          "make"
        ],
        [
          "aware",
          "aware"
        ]
      ],
      "raw_glosses": [
        "(informal) To instruct or make (someone) aware of (something)."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "key on"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs formed with \"on\"",
    "English verbs",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "keys on",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "keying on",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "keyed on",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "keyed on",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "key on (third-person singular simple present keys on, present participle keying on, simple past and past participle keyed on)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "en:Sports"
      ],
      "glosses": [
        "To anticipate a play by watching and analyzing the movements of one's opponent(s)."
      ],
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "anticipate",
          "anticipate"
        ],
        [
          "play",
          "play"
        ],
        [
          "watch",
          "watch"
        ],
        [
          "analyzing",
          "analyze"
        ],
        [
          "movement",
          "movement"
        ],
        [
          "opponent",
          "opponent"
        ]
      ],
      "raw_glosses": [
        "(sports) To anticipate a play by watching and analyzing the movements of one's opponent(s)."
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ]
    },
    {
      "categories": [
        "English informal terms",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "She keyed me on to the plan.",
          "type": "example"
        }
      ],
      "glosses": [
        "To instruct or make (someone) aware of (something)."
      ],
      "links": [
        [
          "instruct",
          "instruct"
        ],
        [
          "make",
          "make"
        ],
        [
          "aware",
          "aware"
        ]
      ],
      "raw_glosses": [
        "(informal) To instruct or make (someone) aware of (something)."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "key on"
}