"drop down" meaning in English

{
  "forms": [
    {
      "form": "drops down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "dropping down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "dropped down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "dropped down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "drop down (third-person singular simple present drops down, present participle dropping down, simple past and past participle dropped down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "77 23",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "72 28",
          "kind": "other",
          "name": "English phrasal verbs with particle (down)",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "To sail, move, or row down a coast, or down a river to the sea."
      ],
      "id": "en-drop_down-en-verb-yBZEgk4h",
      "links": [
        [
          "nautical",
          "nautical"
        ]
      ],
      "raw_glosses": [
        "(nautical, intransitive) To sail, move, or row down a coast, or down a river to the sea."
      ],
      "tags": [
        "intransitive"
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    },
    {
      "derived": [
        {
          "_dis1": "32 68",
          "tags": [
            "adjective"
          ],
          "word": "dropdown"
        },
        {
          "_dis1": "32 68",
          "tags": [
            "adjective"
          ],
          "word": "drop-down"
        }
      ],
      "glosses": [
        "Used other than figuratively or idiomatically: see drop, down."
      ],
      "id": "en-drop_down-en-verb-SkdDTSAS",
      "links": [
        [
          "drop",
          "drop#English"
        ],
        [
          "down",
          "down#English"
        ]
      ]
    }
  ],
  "word": "drop down"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs with particle (down)",
    "English verbs"
  ],
  "derived": [
    {
      "tags": [
        "adjective"
      ],
      "word": "dropdown"
    },
    {
      "tags": [
        "adjective"
      ],
      "word": "drop-down"
    }
  ],
  "forms": [
    {
      "form": "drops down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "dropping down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "dropped down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "dropped down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "drop down (third-person singular simple present drops down, present participle dropping down, simple past and past participle dropped down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English intransitive verbs",
        "en:Nautical"
      ],
      "glosses": [
        "To sail, move, or row down a coast, or down a river to the sea."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ]
      ],
      "raw_glosses": [
        "(nautical, intransitive) To sail, move, or row down a coast, or down a river to the sea."
      ],
      "tags": [
        "intransitive"
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    },
    {
      "glosses": [
        "Used other than figuratively or idiomatically: see drop, down."
      ],
      "links": [
        [
          "drop",
          "drop#English"
        ],
        [
          "down",
          "down#English"
        ]
      ]
    }
  ],
  "word": "drop down"
}