"crackjaw" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "crack",
        "3": "jaw"
      },
      "expansion": "crack + jaw",
      "name": "compound"
    }
  ],
  "etymology_text": "From crack + jaw.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "crackjaw (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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"
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          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
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          "source": "w"
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          "kind": "other",
          "name": "English exocentric verb-noun compounds",
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            "Verb-noun compounds",
            "Exocentric compounds",
            "Verb-object compounds",
            "Compound terms",
            "Terms by etymology"
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          "source": "w"
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          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
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      ],
      "examples": [
        {
          "text": "a crackjaw language"
        },
        {
          "text": "a crackjaw name"
        },
        {
          "ref": "2009, Patsy Clairmont, All Cracked Up: Experiencing God in the Broken Places",
          "text": "Benjamin Disraeli, who was a pretty bright guy—a novelist, debater, and prime minister of England—tried to identify a person once and ended up exclaiming, \"A Polish nobleman, a Count somebody; I never can remember their crack-jaw name.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Difficult or unpleasant to pronounce."
      ],
      "id": "en-crackjaw-en-adj-7fK9I9-J",
      "links": [
        [
          "pronounce",
          "pronounce"
        ]
      ],
      "related": [
        {
          "word": "jawbreaker"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "crackjaw"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "crack",
        "3": "jaw"
      },
      "expansion": "crack + jaw",
      "name": "compound"
    }
  ],
  "etymology_text": "From crack + jaw.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "crackjaw (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "jawbreaker"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English compound terms",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English exocentric verb-noun compounds",
        "English lemmas",
        "English terms with quotations",
        "English uncomparable adjectives",
        "Pages with 1 entry"
      ],
      "examples": [
        {
          "text": "a crackjaw language"
        },
        {
          "text": "a crackjaw name"
        },
        {
          "ref": "2009, Patsy Clairmont, All Cracked Up: Experiencing God in the Broken Places",
          "text": "Benjamin Disraeli, who was a pretty bright guy—a novelist, debater, and prime minister of England—tried to identify a person once and ended up exclaiming, \"A Polish nobleman, a Count somebody; I never can remember their crack-jaw name.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Difficult or unpleasant to pronounce."
      ],
      "links": [
        [
          "pronounce",
          "pronounce"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "crackjaw"
}