"er" meaning in Malay

{
  "etymology_templates": [
    {
      "args": {
        "1": "ms",
        "2": "en",
        "3": "er",
        "nocap": "1"
      },
      "expansion": "borrowed from English er",
      "name": "bor+"
    }
  ],
  "etymology_text": "Possibly borrowed from English er or is a pronunciation spelling of a in non-rhotic Malay accents.",
  "head_templates": [
    {
      "args": {},
      "expansion": "er",
      "name": "ms-interj"
    }
  ],
  "lang": "Malay",
  "lang_code": "ms",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Malay entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 54 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Er, where are we going?",
          "text": "Er, kita tengah ke mana ni?",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to express hesitation; er, uh."
      ],
      "id": "en-er-ms-intj-C82zPKoP",
      "links": [
        [
          "hesitation",
          "hesitation#English"
        ],
        [
          "er",
          "er#English"
        ],
        [
          "uh",
          "uh"
        ]
      ],
      "synonyms": [
        {
          "word": "a"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ə]"
    }
  ],
  "word": "er"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ms",
        "2": "en",
        "3": "er",
        "nocap": "1"
      },
      "expansion": "borrowed from English er",
      "name": "bor+"
    }
  ],
  "etymology_text": "Possibly borrowed from English er or is a pronunciation spelling of a in non-rhotic Malay accents.",
  "head_templates": [
    {
      "args": {},
      "expansion": "er",
      "name": "ms-interj"
    }
  ],
  "lang": "Malay",
  "lang_code": "ms",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Malay entries with incorrect language header",
        "Malay interjections",
        "Malay lemmas",
        "Malay terms borrowed from English",
        "Malay terms derived from English",
        "Malay terms with usage examples",
        "Pages with 54 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "Er, where are we going?",
          "text": "Er, kita tengah ke mana ni?",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to express hesitation; er, uh."
      ],
      "links": [
        [
          "hesitation",
          "hesitation#English"
        ],
        [
          "er",
          "er#English"
        ],
        [
          "uh",
          "uh"
        ]
      ],
      "synonyms": [
        {
          "word": "a"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ə]"
    }
  ],
  "word": "er"
}