"knee high" meaning in English

{
  "forms": [
    {
      "form": "knee highs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "knee high (plural knee highs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Footwear",
          "orig": "en:Footwear",
          "parents": [
            "Clothing",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Underwear",
          "orig": "en:Underwear",
          "parents": [
            "Clothing",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a sock that reaches almost up to the knee"
      ],
      "id": "en-knee_high-en-noun-sb~d4L0G",
      "links": [
        [
          "sock",
          "sock"
        ],
        [
          "knee",
          "knee"
        ]
      ],
      "raw_glosses": [
        "(chiefly in the plural) a sock that reaches almost up to the knee"
      ],
      "synonyms": [
        {
          "word": "knee sock"
        }
      ],
      "tags": [
        "in-plural"
      ]
    }
  ],
  "word": "knee high"
}

{
  "forms": [
    {
      "form": "knee highs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "knee high (plural knee highs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Footwear",
        "en:Underwear"
      ],
      "glosses": [
        "a sock that reaches almost up to the knee"
      ],
      "links": [
        [
          "sock",
          "sock"
        ],
        [
          "knee",
          "knee"
        ]
      ],
      "raw_glosses": [
        "(chiefly in the plural) a sock that reaches almost up to the knee"
      ],
      "tags": [
        "in-plural"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "knee sock"
    }
  ],
  "word": "knee high"
}