"quack like a duck" meaning in English

{
  "forms": [
    {
      "form": "quacks like a duck",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "quacking like a duck",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "quacked like a duck",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "quacked like a duck",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "quack like a duck (third-person singular simple present quacks like a duck, present participle quacking like a duck, simple past and past participle quacked like a duck)",
      "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"
        },
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          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English predicates",
          "parents": [],
          "source": "w"
        },
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          "kind": "other",
          "name": "English similes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "If it quacks like a duck, it's a duck.",
          "type": "example"
        }
      ],
      "glosses": [
        "To appear to be exactly what one is."
      ],
      "id": "en-quack_like_a_duck-en-verb-0l8OF4MK",
      "qualifier": "simile",
      "raw_glosses": [
        "(simile) To appear to be exactly what one is."
      ],
      "related": [
        {
          "word": "duck typing"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-quack like a duck.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f7/En-au-quack_like_a_duck.ogg/En-au-quack_like_a_duck.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f7/En-au-quack_like_a_duck.ogg"
    }
  ],
  "word": "quack like a duck"
}

{
  "forms": [
    {
      "form": "quacks like a duck",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "quacking like a duck",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "quacked like a duck",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "quacked like a duck",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "quack like a duck (third-person singular simple present quacks like a duck, present participle quacking like a duck, simple past and past participle quacked like a duck)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "duck typing"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English predicates",
        "English similes",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with usage examples",
        "English verbs",
        "Pages with 1 entry"
      ],
      "examples": [
        {
          "text": "If it quacks like a duck, it's a duck.",
          "type": "example"
        }
      ],
      "glosses": [
        "To appear to be exactly what one is."
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(simile) To appear to be exactly what one is."
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-quack like a duck.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f7/En-au-quack_like_a_duck.ogg/En-au-quack_like_a_duck.ogg.mp3",
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  "word": "quack like a duck"
}