"ממלא־מקום זײַן" meaning in Yiddish

{
  "forms": [
    {
      "form": "memale-mokem zayn",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ממלא־מקום געווען",
      "roman": "memale-mokem geven",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ממלא־מקום געווען",
        "2": "memale-mokem geven",
        "tr": "memale-mokem zayn"
      },
      "expansion": "ממלא־מקום זײַן • (memale-mokem zayn) (past participle ממלא־מקום געווען (memale-mokem geven))",
      "name": "yi-verb"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "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 non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "to substitute"
      ],
      "id": "en-ממלא־מקום_זײַן-yi-verb-Y0aVXWjP",
      "links": [
        [
          "substitute",
          "substitute"
        ]
      ]
    }
  ],
  "word": "ממלא־מקום זײַן"
}

{
  "forms": [
    {
      "form": "memale-mokem zayn",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ממלא־מקום געווען",
      "roman": "memale-mokem geven",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ממלא־מקום געווען",
        "2": "memale-mokem geven",
        "tr": "memale-mokem zayn"
      },
      "expansion": "ממלא־מקום זײַן • (memale-mokem zayn) (past participle ממלא־מקום געווען (memale-mokem geven))",
      "name": "yi-verb"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Yiddish entries with incorrect language header",
        "Yiddish lemmas",
        "Yiddish multiword terms",
        "Yiddish terms with non-redundant manual transliterations",
        "Yiddish verbs"
      ],
      "glosses": [
        "to substitute"
      ],
      "links": [
        [
          "substitute",
          "substitute"
        ]
      ]
    }
  ],
  "word": "ממלא־מקום זײַן"
}