"a treat" meaning in All languages combined

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "like a treat",
        "3": "",
        "4": "thing that gives pleasure",
        "nocap": "1"
      },
      "expansion": "ellipsis of like a treat (“thing that gives pleasure”)",
      "name": "ellipsis"
    }
  ],
  "etymology_text": "An ellipsis of like a treat (“thing that gives pleasure”).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "a treat (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The plan worked a treat."
        },
        {
          "text": "That meal went down a treat."
        }
      ],
      "glosses": [
        "Very nicely or effectively."
      ],
      "id": "en-a_treat-en-adv-SEjd2Ev-",
      "raw_glosses": [
        "(British English, colloquial) Very nicely or effectively."
      ],
      "synonyms": [
        {
          "word": "like a charm"
        }
      ],
      "tags": [
        "British",
        "English",
        "colloquial",
        "not-comparable"
      ]
    }
  ],
  "word": "a treat"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "like a treat",
        "3": "",
        "4": "thing that gives pleasure",
        "nocap": "1"
      },
      "expansion": "ellipsis of like a treat (“thing that gives pleasure”)",
      "name": "ellipsis"
    }
  ],
  "etymology_text": "An ellipsis of like a treat (“thing that gives pleasure”).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "a treat (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English colloquialisms",
        "English ellipses",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English uncomparable adverbs"
      ],
      "examples": [
        {
          "text": "The plan worked a treat."
        },
        {
          "text": "That meal went down a treat."
        }
      ],
      "glosses": [
        "Very nicely or effectively."
      ],
      "raw_glosses": [
        "(British English, colloquial) Very nicely or effectively."
      ],
      "tags": [
        "British",
        "English",
        "colloquial",
        "not-comparable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "like a charm"
    }
  ],
  "word": "a treat"
}