"איז" meaning in Yiddish

{
  "forms": [
    {
      "form": "iz",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "yi",
        "2": "verb form",
        "tr": "iz"
      },
      "expansion": "איז • (iz)",
      "name": "head"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Yiddish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Yiddish terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "is: third-person singular present of זײַן (zayn)"
      ],
      "id": "en-איז-yi-verb-7wkxLT~w",
      "links": [
        [
          "is",
          "is"
        ],
        [
          "זײַן",
          "זײַן#Yiddish"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/iz/"
    },
    {
      "ipa": "[ɪ]",
      "tags": [
        "colloquial",
        "unstressed"
      ]
    }
  ],
  "word": "איז"
}

{
  "forms": [
    {
      "form": "iz",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "yi",
        "2": "verb form",
        "tr": "iz"
      },
      "expansion": "איז • (iz)",
      "name": "head"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Yiddish entries with incorrect language header",
        "Yiddish non-lemma forms",
        "Yiddish terms with IPA pronunciation",
        "Yiddish terms with redundant transliterations",
        "Yiddish verb forms"
      ],
      "glosses": [
        "is: third-person singular present of זײַן (zayn)"
      ],
      "links": [
        [
          "is",
          "is"
        ],
        [
          "זײַן",
          "זײַן#Yiddish"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/iz/"
    },
    {
      "ipa": "[ɪ]",
      "tags": [
        "colloquial",
        "unstressed"
      ]
    }
  ],
  "word": "איז"
}