"crate shy of a load" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "one fry short of a Happy Meal"
      },
      "expansion": "one fry short of a Happy Meal",
      "name": "l"
    }
  ],
  "etymology_text": "From the common saying \"one X short of Y\", meaning not living up to what is normal or expected. Compare one fry short of a Happy Meal.",
  "head_templates": [
    {
      "args": {
        "1": "!"
      },
      "expansion": "crate shy of a load (plural not attested)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English nouns with unattested plurals",
          "parents": [
            "Nouns with unattested plurals",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A gullible simpleton."
      ],
      "id": "en-crate_shy_of_a_load-en-noun-20RtawXm",
      "links": [
        [
          "gullible",
          "gullible"
        ],
        [
          "simpleton",
          "simpleton"
        ]
      ],
      "raw_glosses": [
        "(rare) A gullible simpleton."
      ],
      "tags": [
        "no-plural",
        "rare"
      ]
    }
  ],
  "word": "crate shy of a load"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "one fry short of a Happy Meal"
      },
      "expansion": "one fry short of a Happy Meal",
      "name": "l"
    }
  ],
  "etymology_text": "From the common saying \"one X short of Y\", meaning not living up to what is normal or expected. Compare one fry short of a Happy Meal.",
  "head_templates": [
    {
      "args": {
        "1": "!"
      },
      "expansion": "crate shy of a load (plural not attested)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unattested plurals",
        "English terms with rare senses"
      ],
      "glosses": [
        "A gullible simpleton."
      ],
      "links": [
        [
          "gullible",
          "gullible"
        ],
        [
          "simpleton",
          "simpleton"
        ]
      ],
      "raw_glosses": [
        "(rare) A gullible simpleton."
      ],
      "tags": [
        "no-plural",
        "rare"
      ]
    }
  ],
  "word": "crate shy of a load"
}