"up to the hub" meaning in English

{
  "etymology_text": "Suggesting a wheel stuck in mud.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "up to the hub",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "up to the hub",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "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": [
        {
          "ref": "Amateur work, illustrated (volume 4, page 406)",
          "text": "I am afraid A. F. S. (Dresden) gets \"up to the hub\" in engineering difficulties sometimes, but this will help him to appreciate the force, beauty and application of the expression."
        },
        {
          "ref": "1864, The Gleaner, page 13:",
          "text": "I was up to the hub in love, and was goin' into it like a locomotive.",
          "type": "quote"
        },
        {
          "ref": "1885, Andrew Madsen Smith, Up and Down in the World, Or, Paddle Your Own Canoe, page 106:",
          "text": "[…] I was like the wheels of the wagon, out of which I had made some of my capital — up to the hub in the mire of poverty, a heavy load forcing me deeper down, and no aid likely to be given me.",
          "type": "quote"
        }
      ],
      "glosses": [
        "As far as possible in embarrassment or difficulty, or in business; deeply involved."
      ],
      "id": "en-up_to_the_hub-en-prep_phrase-jg0GrWVa",
      "raw_glosses": [
        "(idiomatic) As far as possible in embarrassment or difficulty, or in business; deeply involved."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "up to the hub"
}

{
  "etymology_text": "Suggesting a wheel stuck in mud.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "up to the hub",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "up to the hub",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "Amateur work, illustrated (volume 4, page 406)",
          "text": "I am afraid A. F. S. (Dresden) gets \"up to the hub\" in engineering difficulties sometimes, but this will help him to appreciate the force, beauty and application of the expression."
        },
        {
          "ref": "1864, The Gleaner, page 13:",
          "text": "I was up to the hub in love, and was goin' into it like a locomotive.",
          "type": "quote"
        },
        {
          "ref": "1885, Andrew Madsen Smith, Up and Down in the World, Or, Paddle Your Own Canoe, page 106:",
          "text": "[…] I was like the wheels of the wagon, out of which I had made some of my capital — up to the hub in the mire of poverty, a heavy load forcing me deeper down, and no aid likely to be given me.",
          "type": "quote"
        }
      ],
      "glosses": [
        "As far as possible in embarrassment or difficulty, or in business; deeply involved."
      ],
      "raw_glosses": [
        "(idiomatic) As far as possible in embarrassment or difficulty, or in business; deeply involved."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "up to the hub"
}