"like a charm" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "like a charm",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "like a charm",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "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"
        },
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          "kind": "other",
          "name": "English similes",
          "parents": [],
          "source": "w"
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          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
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          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The sales pitch worked like a charm.",
          "type": "example"
        },
        {
          "ref": "2004, Joseph Rocco Cervasio, Bad News on the Doorstep: Inspired by a True Story, page 121",
          "text": "The Chevy drove like a charm, even with a couple inches of snow on the roads.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Very effectively."
      ],
      "id": "en-like_a_charm-en-prep_phrase-EhoFyciA",
      "synonyms": [
        {
          "word": "a treat"
        },
        {
          "word": "like a dream"
        },
        {
          "word": "like magic"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-like a charm.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/a6/En-au-like_a_charm.ogg/En-au-like_a_charm.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/a/a6/En-au-like_a_charm.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "like a charm"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "like a charm",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "like a charm",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English similes",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "English terms with usage examples",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "text": "The sales pitch worked like a charm.",
          "type": "example"
        },
        {
          "ref": "2004, Joseph Rocco Cervasio, Bad News on the Doorstep: Inspired by a True Story, page 121",
          "text": "The Chevy drove like a charm, even with a couple inches of snow on the roads.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Very effectively."
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-like a charm.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/a6/En-au-like_a_charm.ogg/En-au-like_a_charm.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/a/a6/En-au-like_a_charm.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "synonyms": [
    {
      "word": "a treat"
    },
    {
      "word": "like a dream"
    },
    {
      "word": "like magic"
    }
  ],
  "word": "like a charm"
}