"to a hair" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hair's breadth"
      },
      "expansion": "hair's breadth",
      "name": "m"
    }
  ],
  "etymology_text": "A reference to the very small diameter of a strand of hair: compare hair's breadth.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "to a hair",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "to a hair",
      "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": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Hair",
          "orig": "en:Hair",
          "parents": [
            "Body parts",
            "Body",
            "Anatomy",
            "Human",
            "Biology",
            "Medicine",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "To a high degree of precision; with the utmost exactness; to a nicety."
      ],
      "id": "en-to_a_hair-en-prep_phrase-HaDqc3UM",
      "links": [
        [
          "high",
          "high#Adjective"
        ],
        [
          "degree",
          "degree"
        ],
        [
          "precision",
          "precision#Noun"
        ],
        [
          "utmost",
          "utmost#Adjective"
        ],
        [
          "exactness",
          "exactness"
        ],
        [
          "to a nicety",
          "to a nicety"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To a high degree of precision; with the utmost exactness; to a nicety."
      ],
      "related": [
        {
          "word": "hair's breadth"
        }
      ],
      "synonyms": [
        {
          "word": "to the turn of a hair"
        }
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "to a high degree of precision",
          "word": "pilkulleen"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "to a high degree of precision",
          "word": "haarklein"
        },
        {
          "code": "grc",
          "lang": "Ancient Greek",
          "roman": "eis ónukha",
          "sense": "to a high degree of precision",
          "word": "εἰς ὄνῠχᾰ"
        },
        {
          "code": "la",
          "lang": "Latin",
          "sense": "to a high degree of precision",
          "word": "ad unguem"
        },
        {
          "code": "la",
          "lang": "Latin",
          "sense": "to a high degree of precision",
          "word": "in unguem"
        },
        {
          "code": "sh",
          "lang": "Serbo-Croatian",
          "sense": "to a high degree of precision",
          "tags": [
            "Cyrillic"
          ],
          "word": "у длаку"
        },
        {
          "code": "sh",
          "lang": "Serbo-Croatian",
          "sense": "to a high degree of precision",
          "tags": [
            "Roman"
          ],
          "word": "u dlaku"
        },
        {
          "code": "cy",
          "lang": "Welsh",
          "sense": "to a high degree of precision",
          "word": "at y blewyn"
        },
        {
          "code": "cy",
          "lang": "Welsh",
          "sense": "to a high degree of precision",
          "word": "i'r blewyn"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tuː‿ə ˈhɛə/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/tu‿ə ˈhɛ(ə)ɹ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "rhymes": "-ɛə(ɹ)"
    }
  ],
  "word": "to a hair"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hair's breadth"
      },
      "expansion": "hair's breadth",
      "name": "m"
    }
  ],
  "etymology_text": "A reference to the very small diameter of a strand of hair: compare hair's breadth.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "to a hair",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "to a hair",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "related": [
    {
      "word": "hair's breadth"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with IPA pronunciation",
        "English terms with non-redundant non-automated sortkeys",
        "Rhymes:English/ɛə(ɹ)",
        "Rhymes:English/ɛə(ɹ)/3 syllables",
        "en:Hair"
      ],
      "glosses": [
        "To a high degree of precision; with the utmost exactness; to a nicety."
      ],
      "links": [
        [
          "high",
          "high#Adjective"
        ],
        [
          "degree",
          "degree"
        ],
        [
          "precision",
          "precision#Noun"
        ],
        [
          "utmost",
          "utmost#Adjective"
        ],
        [
          "exactness",
          "exactness"
        ],
        [
          "to a nicety",
          "to a nicety"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To a high degree of precision; with the utmost exactness; to a nicety."
      ],
      "synonyms": [
        {
          "word": "to the turn of a hair"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tuː‿ə ˈhɛə/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/tu‿ə ˈhɛ(ə)ɹ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "rhymes": "-ɛə(ɹ)"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "to a high degree of precision",
      "word": "pilkulleen"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "to a high degree of precision",
      "word": "haarklein"
    },
    {
      "code": "grc",
      "lang": "Ancient Greek",
      "roman": "eis ónukha",
      "sense": "to a high degree of precision",
      "word": "εἰς ὄνῠχᾰ"
    },
    {
      "code": "la",
      "lang": "Latin",
      "sense": "to a high degree of precision",
      "word": "ad unguem"
    },
    {
      "code": "la",
      "lang": "Latin",
      "sense": "to a high degree of precision",
      "word": "in unguem"
    },
    {
      "code": "sh",
      "lang": "Serbo-Croatian",
      "sense": "to a high degree of precision",
      "tags": [
        "Cyrillic"
      ],
      "word": "у длаку"
    },
    {
      "code": "sh",
      "lang": "Serbo-Croatian",
      "sense": "to a high degree of precision",
      "tags": [
        "Roman"
      ],
      "word": "u dlaku"
    },
    {
      "code": "cy",
      "lang": "Welsh",
      "sense": "to a high degree of precision",
      "word": "at y blewyn"
    },
    {
      "code": "cy",
      "lang": "Welsh",
      "sense": "to a high degree of precision",
      "word": "i'r blewyn"
    }
  ],
  "word": "to a hair"
}