"scratch one's head" meaning in English

{
  "etymology_text": "scratch + one's + head",
  "forms": [
    {
      "form": "scratches one's head",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "scratching one's head",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "scratched one's head",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "scratched one's head",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "scratch one's head (third-person singular simple present scratches one's head, present participle scratching one's head, simple past and past participle scratched one's head)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Faced with a box full of hundreds of small parts and forty pages worth of assembly instructions, he could do little more than stand there and scratch his head.",
          "type": "example"
        },
        {
          "ref": "2010 December 28, Owen Phillips, “Sunderland 0 - 2 Blackpool”, in BBC:",
          "text": "But Sunderland will be left scratching their heads at the result after creating enough chances to have won two games in a refreshingly open and frantic first period.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To puzzle, ponder, or wonder about something."
      ],
      "id": "en-scratch_one's_head-en-verb-eTBqrvHq",
      "links": [
        [
          "puzzle",
          "puzzle"
        ],
        [
          "ponder",
          "ponder"
        ],
        [
          "wonder",
          "wonder"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To puzzle, ponder, or wonder about something."
      ],
      "related": [
        {
          "word": "head-scratcher"
        },
        {
          "word": "head scratcher"
        },
        {
          "word": "head-scratching"
        },
        {
          "word": "head scratching"
        },
        {
          "english": "scratching my head",
          "word": "SMH"
        },
        {
          "word": "smh"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-scratch one's head.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5c/En-au-scratch_one%27s_head.ogg/En-au-scratch_one%27s_head.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5c/En-au-scratch_one%27s_head.ogg"
    }
  ],
  "word": "scratch one's head"
}

{
  "etymology_text": "scratch + one's + head",
  "forms": [
    {
      "form": "scratches one's head",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "scratching one's head",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "scratched one's head",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "scratched one's head",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "scratch one's head (third-person singular simple present scratches one's head, present participle scratching one's head, simple past and past participle scratched one's head)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "head-scratcher"
    },
    {
      "word": "head scratcher"
    },
    {
      "word": "head-scratching"
    },
    {
      "word": "head scratching"
    },
    {
      "english": "scratching my head",
      "word": "SMH"
    },
    {
      "word": "smh"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English terms with usage examples",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "Faced with a box full of hundreds of small parts and forty pages worth of assembly instructions, he could do little more than stand there and scratch his head.",
          "type": "example"
        },
        {
          "ref": "2010 December 28, Owen Phillips, “Sunderland 0 - 2 Blackpool”, in BBC:",
          "text": "But Sunderland will be left scratching their heads at the result after creating enough chances to have won two games in a refreshingly open and frantic first period.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To puzzle, ponder, or wonder about something."
      ],
      "links": [
        [
          "puzzle",
          "puzzle"
        ],
        [
          "ponder",
          "ponder"
        ],
        [
          "wonder",
          "wonder"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To puzzle, ponder, or wonder about something."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-scratch one's head.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5c/En-au-scratch_one%27s_head.ogg/En-au-scratch_one%27s_head.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5c/En-au-scratch_one%27s_head.ogg"
    }
  ],
  "word": "scratch one's head"
}