"mud student" meaning in English

{
  "forms": [
    {
      "form": "mud students",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mud student (plural mud students)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "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": "1865, Henry Hall Dixon, Field and Fern: Or, Scottish Flocks & Herds (South), page 188:",
          "text": "This dog was bred by a “mud student” in the Coldstream or Cornhill district, and had for his sire a dog Dandie, bred by Mr. Frain of Trows.",
          "type": "quote"
        },
        {
          "ref": "1894, Rhoda Broughton, A Beginner, page 20:",
          "text": "“Is he a new mud student?”\n“He is not the cut of a mud student.”",
          "type": "quote"
        }
      ],
      "glosses": [
        "A student of agriculture."
      ],
      "id": "en-mud_student-en-noun-9s7L8Z2O",
      "links": [
        [
          "student",
          "student"
        ],
        [
          "agriculture",
          "agriculture"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) A student of agriculture."
      ],
      "tags": [
        "UK",
        "obsolete",
        "slang"
      ]
    }
  ],
  "word": "mud student"
}

{
  "forms": [
    {
      "form": "mud students",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mud student (plural mud students)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with obsolete senses",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1865, Henry Hall Dixon, Field and Fern: Or, Scottish Flocks & Herds (South), page 188:",
          "text": "This dog was bred by a “mud student” in the Coldstream or Cornhill district, and had for his sire a dog Dandie, bred by Mr. Frain of Trows.",
          "type": "quote"
        },
        {
          "ref": "1894, Rhoda Broughton, A Beginner, page 20:",
          "text": "“Is he a new mud student?”\n“He is not the cut of a mud student.”",
          "type": "quote"
        }
      ],
      "glosses": [
        "A student of agriculture."
      ],
      "links": [
        [
          "student",
          "student"
        ],
        [
          "agriculture",
          "agriculture"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) A student of agriculture."
      ],
      "tags": [
        "UK",
        "obsolete",
        "slang"
      ]
    }
  ],
  "word": "mud student"
}