"show a leg" meaning in English

{
  "etymology_text": "Supposedly originated in the 19th-century Royal Navy as a waking call.",
  "forms": [
    {
      "form": "shows a leg",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "showing a leg",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "showed a leg",
      "tags": [
        "past"
      ]
    },
    {
      "form": "shown a leg",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "2": "",
        "3": "",
        "4": "shown a leg"
      },
      "expansion": "show a leg (third-person singular simple present shows a leg, present participle showing a leg, simple past showed a leg, past participle shown a leg)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English predicates",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Show a leg or you’re going to be late.",
          "type": "example"
        }
      ],
      "glosses": [
        "To wake up and get out of bed."
      ],
      "id": "en-show_a_leg-en-verb-Dtsf8nJO",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "wake up",
          "wake up"
        ],
        [
          "bed",
          "bed"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, nautical, chiefly imperative) To wake up and get out of bed."
      ],
      "related": [
        {
          "word": "shake a leg"
        }
      ],
      "tags": [
        "idiomatic",
        "imperative"
      ],
      "topics": [
        "nautical",
        "transport"
      ],
      "wikipedia": [
        "Royal Navy"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-show a leg.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f2/En-au-show_a_leg.ogg/En-au-show_a_leg.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f2/En-au-show_a_leg.ogg"
    }
  ],
  "word": "show a leg"
}

{
  "etymology_text": "Supposedly originated in the 19th-century Royal Navy as a waking call.",
  "forms": [
    {
      "form": "shows a leg",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "showing a leg",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "showed a leg",
      "tags": [
        "past"
      ]
    },
    {
      "form": "shown a leg",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "2": "",
        "3": "",
        "4": "shown a leg"
      },
      "expansion": "show a leg (third-person singular simple present shows a leg, present participle showing a leg, simple past showed a leg, past participle shown a leg)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "shake a leg"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English predicates",
        "English terms with usage examples",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Nautical"
      ],
      "examples": [
        {
          "text": "Show a leg or you’re going to be late.",
          "type": "example"
        }
      ],
      "glosses": [
        "To wake up and get out of bed."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "wake up",
          "wake up"
        ],
        [
          "bed",
          "bed"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, nautical, chiefly imperative) To wake up and get out of bed."
      ],
      "tags": [
        "idiomatic",
        "imperative"
      ],
      "topics": [
        "nautical",
        "transport"
      ],
      "wikipedia": [
        "Royal Navy"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-show a leg.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f2/En-au-show_a_leg.ogg/En-au-show_a_leg.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f2/En-au-show_a_leg.ogg"
    }
  ],
  "word": "show a leg"
}