"turn a hair" meaning in English

{
  "forms": [
    {
      "form": "turns a hair",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "turning a hair",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "turned a hair",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "turned a hair",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "turn a hair (third-person singular simple present turns a hair, present participle turning a hair, simple past and past participle turned a hair)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "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 language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English light verb constructions",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English negative polarity items",
          "parents": [
            "Negative polarity items",
            "Terms by semantic function"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English predicates",
          "parents": [],
          "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"
        }
      ],
      "examples": [
        {
          "ref": "1917, Henry Handel Richardson, Australia Felix, New York: W.W. Norton & Co., Part IV, Chapter 9, p. 435",
          "text": "[…] those seasoned topers who drank their companions under the table without themselves turning a hair […]",
          "type": "quotation"
        },
        {
          "ref": "1952, Neville Shute, The Far Country, London: Heinemann, Chapter",
          "text": "[…] they all went into a shop that Jennifer alone would never have dreamed of entering, and looked at watches; finally Jane bought a gold self-winding wrist-watch for her husband for ninety-two guineas, and never turned a hair.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To show fear, alarm or distress; to be affected (by an experience or situation)."
      ],
      "id": "en-turn_a_hair-en-verb-z-hT3wto",
      "links": [
        [
          "fear",
          "fear"
        ],
        [
          "alarm",
          "alarm"
        ],
        [
          "distress",
          "distress"
        ],
        [
          "affect",
          "affect"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, in the negative) To show fear, alarm or distress; to be affected (by an experience or situation)."
      ],
      "raw_tags": [
        "in the negative"
      ],
      "related": [
        {
          "word": "bat an eyelid"
        },
        {
          "word": "to the turn of a hair"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-turn a hair.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/8b/En-au-turn_a_hair.ogg/En-au-turn_a_hair.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/8b/En-au-turn_a_hair.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "turn a hair"
}

{
  "forms": [
    {
      "form": "turns a hair",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "turning a hair",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "turned a hair",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "turned a hair",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "turn a hair (third-person singular simple present turns a hair, present participle turning a hair, simple past and past participle turned a hair)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "bat an eyelid"
    },
    {
      "word": "to the turn of a hair"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English idioms",
        "English lemmas",
        "English light verb constructions",
        "English multiword terms",
        "English negative polarity items",
        "English predicates",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "English verbs",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1917, Henry Handel Richardson, Australia Felix, New York: W.W. Norton & Co., Part IV, Chapter 9, p. 435",
          "text": "[…] those seasoned topers who drank their companions under the table without themselves turning a hair […]",
          "type": "quotation"
        },
        {
          "ref": "1952, Neville Shute, The Far Country, London: Heinemann, Chapter",
          "text": "[…] they all went into a shop that Jennifer alone would never have dreamed of entering, and looked at watches; finally Jane bought a gold self-winding wrist-watch for her husband for ninety-two guineas, and never turned a hair.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To show fear, alarm or distress; to be affected (by an experience or situation)."
      ],
      "links": [
        [
          "fear",
          "fear"
        ],
        [
          "alarm",
          "alarm"
        ],
        [
          "distress",
          "distress"
        ],
        [
          "affect",
          "affect"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, in the negative) To show fear, alarm or distress; to be affected (by an experience or situation)."
      ],
      "raw_tags": [
        "in the negative"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-turn a hair.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/8b/En-au-turn_a_hair.ogg/En-au-turn_a_hair.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/8b/En-au-turn_a_hair.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "turn a hair"
}