"äru" meaning in Swedish

{
  "etymology_templates": [
    {
      "args": {
        "1": "is",
        "2": "ertu"
      },
      "expansion": "Icelandic ertu",
      "name": "cog"
    }
  ],
  "etymology_text": "Compare Icelandic ertu.",
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "phrase"
      },
      "expansion": "äru",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Who are you?",
          "text": "Vem äru?",
          "type": "example"
        },
        {
          "english": "Aren't you tired? You haven't slept any.",
          "text": "Äru inte trött? Du har inte sovit nåt.",
          "type": "example"
        }
      ],
      "glosses": [
        "Pronunciation spelling of \"är du\" (are you, you are)."
      ],
      "id": "en-äru-sv-phrase-a6THnSuE",
      "raw_glosses": [
        "(colloquial) Pronunciation spelling of \"är du\" (are you, you are)."
      ],
      "synonyms": [
        {
          "word": "eru"
        }
      ],
      "tags": [
        "alt-of",
        "colloquial",
        "pronunciation-spelling"
      ]
    }
  ],
  "word": "äru"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "is",
        "2": "ertu"
      },
      "expansion": "Icelandic ertu",
      "name": "cog"
    }
  ],
  "etymology_text": "Compare Icelandic ertu.",
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "phrase"
      },
      "expansion": "äru",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Swedish colloquialisms",
        "Swedish entries with incorrect language header",
        "Swedish lemmas",
        "Swedish phrases",
        "Swedish terms with usage examples"
      ],
      "examples": [
        {
          "english": "Who are you?",
          "text": "Vem äru?",
          "type": "example"
        },
        {
          "english": "Aren't you tired? You haven't slept any.",
          "text": "Äru inte trött? Du har inte sovit nåt.",
          "type": "example"
        }
      ],
      "glosses": [
        "Pronunciation spelling of \"är du\" (are you, you are)."
      ],
      "raw_glosses": [
        "(colloquial) Pronunciation spelling of \"är du\" (are you, you are)."
      ],
      "tags": [
        "alt-of",
        "colloquial",
        "pronunciation-spelling"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "eru"
    }
  ],
  "word": "äru"
}