"uhm" meaning in English

{
  "head_templates": [
    {
      "args": {},
      "expansion": "uhm",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "um"
        }
      ],
      "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 2 entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of um"
      ],
      "id": "en-uhm-en-intj-QkdVZFeq",
      "links": [
        [
          "um",
          "um#English"
        ]
      ],
      "raw_glosses": [
        "(rare) Alternative form of um"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ʌm"
    }
  ],
  "word": "uhm"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "uhm",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "um"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English interjections",
        "English lemmas",
        "English terms with rare senses",
        "Pages with 2 entries",
        "Rhymes:English/ʌm",
        "Rhymes:English/ʌm/1 syllable"
      ],
      "glosses": [
        "Alternative form of um"
      ],
      "links": [
        [
          "um",
          "um#English"
        ]
      ],
      "raw_glosses": [
        "(rare) Alternative form of um"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ʌm"
    }
  ],
  "word": "uhm"
}