"mind like a sieve" meaning in English

{
  "etymology_text": "Since a sieve has many holes, the thoughts in such a mind might be imagined to fall out.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "mind like a sieve",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "mind like a steel trap"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English similes",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Oh, that's right. You said that yesterday, didn't you? I have a mind like a sieve.",
          "type": "example"
        }
      ],
      "glosses": [
        "very poor memory"
      ],
      "id": "en-mind_like_a_sieve-en-noun-ZyEY2nCz",
      "links": [
        [
          "memory",
          "memory"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(simile) very poor memory"
      ],
      "related": [
        {
          "word": "leak like a sieve"
        }
      ],
      "synonyms": [
        {
          "word": "memory like a sieve"
        },
        {
          "word": "brain like a sieve"
        },
        {
          "word": "head like a sieve"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "poor memory",
          "word": "pää vuotaa kuin seula"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "poor memory",
          "word": "mémoire de poisson rouge"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "poor memory",
          "word": "ein Hirn wie ein Sieb haben"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "poor memory",
          "word": "ein Gedächtnis wie ein Sieb haben"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "poor memory",
          "word": "avere la memoria corta"
        },
        {
          "code": "lv",
          "lang": "Latvian",
          "sense": "poor memory",
          "word": "caura galva"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "pámjatʹ kak rešetó",
          "sense": "poor memory",
          "word": "па́мять как решето́"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "golová dyrjávaja",
          "sense": "poor memory",
          "word": "голова́ дыря́вая"
        },
        {
          "code": "tl",
          "lang": "Tagalog",
          "sense": "poor memory",
          "word": "may buslong butas"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-have a mind like a sieve.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/45/En-au-have_a_mind_like_a_sieve.ogg/En-au-have_a_mind_like_a_sieve.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/4/45/En-au-have_a_mind_like_a_sieve.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "mind like a sieve"
}

{
  "etymology_text": "Since a sieve has many holes, the thoughts in such a mind might be imagined to fall out.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "mind like a sieve",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "leak like a sieve"
    }
  ],
  "senses": [
    {
      "antonyms": [
        {
          "word": "mind like a steel trap"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English similes",
        "English terms with audio links",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "Oh, that's right. You said that yesterday, didn't you? I have a mind like a sieve.",
          "type": "example"
        }
      ],
      "glosses": [
        "very poor memory"
      ],
      "links": [
        [
          "memory",
          "memory"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(simile) very poor memory"
      ],
      "synonyms": [
        {
          "word": "memory like a sieve"
        },
        {
          "word": "brain like a sieve"
        },
        {
          "word": "head like a sieve"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-have a mind like a sieve.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/45/En-au-have_a_mind_like_a_sieve.ogg/En-au-have_a_mind_like_a_sieve.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/4/45/En-au-have_a_mind_like_a_sieve.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "poor memory",
      "word": "pää vuotaa kuin seula"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "poor memory",
      "word": "mémoire de poisson rouge"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "poor memory",
      "word": "ein Hirn wie ein Sieb haben"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "poor memory",
      "word": "ein Gedächtnis wie ein Sieb haben"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "poor memory",
      "word": "avere la memoria corta"
    },
    {
      "code": "lv",
      "lang": "Latvian",
      "sense": "poor memory",
      "word": "caura galva"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "pámjatʹ kak rešetó",
      "sense": "poor memory",
      "word": "па́мять как решето́"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "golová dyrjávaja",
      "sense": "poor memory",
      "word": "голова́ дыря́вая"
    },
    {
      "code": "tl",
      "lang": "Tagalog",
      "sense": "poor memory",
      "word": "may buslong butas"
    }
  ],
  "word": "mind like a sieve"
}