"key down" meaning in English

{
  "forms": [
    {
      "form": "keys down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "keying down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "keyed down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "keyed down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "key down (third-person singular simple present keys down, present participle keying down, simple past and past participle keyed down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "70 30",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "83 17",
          "kind": "other",
          "name": "English phrasal verbs formed with \"down\"",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "77 23",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "85 15",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "To lower in pitch, level, or intensity; to tone down."
      ],
      "id": "en-key_down-en-verb-BP6Fn7uk",
      "links": [
        [
          "pitch",
          "pitch"
        ],
        [
          "level",
          "level"
        ],
        [
          "intensity",
          "intensity"
        ],
        [
          "tone down",
          "tone down"
        ]
      ],
      "raw_glosses": [
        "(transitive) To lower in pitch, level, or intensity; to tone down."
      ],
      "tags": [
        "transitive"
      ]
    },
    {
      "antonyms": [
        {
          "word": "key up"
        }
      ],
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rest",
          "orig": "en:Rest",
          "parents": [
            "Body",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "To relax."
      ],
      "id": "en-key_down-en-verb-QYVOaXrR",
      "links": [
        [
          "relax",
          "relax"
        ]
      ],
      "raw_glosses": [
        "(figurative, transitive) To relax."
      ],
      "tags": [
        "figuratively",
        "transitive"
      ]
    }
  ],
  "word": "key down"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs formed with \"down\"",
    "English verbs",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "keys down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "keying down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "keyed down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "keyed down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "key down (third-person singular simple present keys down, present participle keying down, simple past and past participle keyed down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English transitive verbs"
      ],
      "glosses": [
        "To lower in pitch, level, or intensity; to tone down."
      ],
      "links": [
        [
          "pitch",
          "pitch"
        ],
        [
          "level",
          "level"
        ],
        [
          "intensity",
          "intensity"
        ],
        [
          "tone down",
          "tone down"
        ]
      ],
      "raw_glosses": [
        "(transitive) To lower in pitch, level, or intensity; to tone down."
      ],
      "tags": [
        "transitive"
      ]
    },
    {
      "antonyms": [
        {
          "word": "key up"
        }
      ],
      "categories": [
        "English transitive verbs",
        "en:Rest"
      ],
      "glosses": [
        "To relax."
      ],
      "links": [
        [
          "relax",
          "relax"
        ]
      ],
      "raw_glosses": [
        "(figurative, transitive) To relax."
      ],
      "tags": [
        "figuratively",
        "transitive"
      ]
    }
  ],
  "word": "key down"
}