"bay yarn" meaning in English

{
  "forms": [
    {
      "form": "bay yarns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "bay yarn (countable and uncountable, plural bay yarns)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1739, some UK law statute",
          "text": "subsidy was granted on the importation of woollen or bay yarn in proportion to the said rate",
          "type": "quotation"
        }
      ],
      "glosses": [
        "woollen yarn"
      ],
      "id": "en-bay_yarn-en-noun-uPfMRbv0",
      "links": [
        [
          "woollen",
          "woollen"
        ],
        [
          "yarn",
          "yarn"
        ]
      ],
      "raw_glosses": [
        "(UK, dialect) woollen yarn"
      ],
      "tags": [
        "UK",
        "countable",
        "dialectal",
        "uncountable"
      ]
    }
  ],
  "word": "bay yarn"
}

{
  "forms": [
    {
      "form": "bay yarns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "bay yarn (countable and uncountable, plural bay yarns)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English dialectal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1739, some UK law statute",
          "text": "subsidy was granted on the importation of woollen or bay yarn in proportion to the said rate",
          "type": "quotation"
        }
      ],
      "glosses": [
        "woollen yarn"
      ],
      "links": [
        [
          "woollen",
          "woollen"
        ],
        [
          "yarn",
          "yarn"
        ]
      ],
      "raw_glosses": [
        "(UK, dialect) woollen yarn"
      ],
      "tags": [
        "UK",
        "countable",
        "dialectal",
        "uncountable"
      ]
    }
  ],
  "word": "bay yarn"
}