"gesteran" meaning in Proto-Germanic

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gmw-pro",
            "2": "*gesteran"
          },
          "expansion": "Proto-West Germanic: *gesteran, *gestran\nOld English: ġiestran, ġeostran, ġiestron, ġistran\n⇒ Old English: ġiestrandæġ, ġeostrandæġ, ġierstandæġ, ġyrstandæġ\nOld Dutch: gestaron\nMiddle Dutch: gisteren\nDutch: gisteren\nOld High German: gesteron, gesteren\nMiddle Low German: gestern\nBavarian:\nCimbrian: gestarn, ghéstan (Sette Comuni)\nMòcheno: gester\nGerman: gestern",
          "name": "desctree"
        }
      ],
      "text": "Proto-West Germanic: *gesteran, *gestran\nOld English: ġiestran, ġeostran, ġiestron, ġistran\n⇒ Old English: ġiestrandæġ, ġeostrandæġ, ġierstandæġ, ġyrstandæġ\nOld Dutch: gestaron\nMiddle Dutch: gisteren\nDutch: gisteren\nOld High German: gesteron, gesteren\nMiddle Low German: gestern\nBavarian:\nCimbrian: gestarn, ghéstan (Sette Comuni)\nMòcheno: gester\nGerman: gestern"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "gem-pro",
        "2": "*gesteraz",
        "3": "*-n"
      },
      "expansion": "*gesteraz + *-n",
      "name": "compound"
    },
    {
      "args": {
        "1": "gem-pro",
        "2": "ine-pro",
        "3": "*dʰǵʰyésteros"
      },
      "expansion": "Proto-Indo-European *dʰǵʰyésteros",
      "name": "inh"
    }
  ],
  "etymology_text": "From *gesteraz + *-n. The first element is from Proto-Indo-European *dʰǵʰyésteros.",
  "head_templates": [
    {
      "args": {
        "1": "gem-pro",
        "2": "adverb"
      },
      "expansion": "*gesteran",
      "name": "head"
    }
  ],
  "lang": "Proto-Germanic",
  "lang_code": "gem-pro",
  "original_title": "Reconstruction:Proto-Germanic/gesteran",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Germanic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "yesterday"
      ],
      "id": "en-gesteran-gem-pro-adv-lSPZ--eb",
      "links": [
        [
          "yesterday",
          "yesterday"
        ]
      ],
      "related": [
        {
          "word": "gestrą"
        }
      ],
      "tags": [
        "reconstruction"
      ],
      "wikipedia": [
        "Brill Publishers"
      ]
    }
  ],
  "word": "gesteran"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gmw-pro",
            "2": "*gesteran"
          },
          "expansion": "Proto-West Germanic: *gesteran, *gestran\nOld English: ġiestran, ġeostran, ġiestron, ġistran\n⇒ Old English: ġiestrandæġ, ġeostrandæġ, ġierstandæġ, ġyrstandæġ\nOld Dutch: gestaron\nMiddle Dutch: gisteren\nDutch: gisteren\nOld High German: gesteron, gesteren\nMiddle Low German: gestern\nBavarian:\nCimbrian: gestarn, ghéstan (Sette Comuni)\nMòcheno: gester\nGerman: gestern",
          "name": "desctree"
        }
      ],
      "text": "Proto-West Germanic: *gesteran, *gestran\nOld English: ġiestran, ġeostran, ġiestron, ġistran\n⇒ Old English: ġiestrandæġ, ġeostrandæġ, ġierstandæġ, ġyrstandæġ\nOld Dutch: gestaron\nMiddle Dutch: gisteren\nDutch: gisteren\nOld High German: gesteron, gesteren\nMiddle Low German: gestern\nBavarian:\nCimbrian: gestarn, ghéstan (Sette Comuni)\nMòcheno: gester\nGerman: gestern"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "gem-pro",
        "2": "*gesteraz",
        "3": "*-n"
      },
      "expansion": "*gesteraz + *-n",
      "name": "compound"
    },
    {
      "args": {
        "1": "gem-pro",
        "2": "ine-pro",
        "3": "*dʰǵʰyésteros"
      },
      "expansion": "Proto-Indo-European *dʰǵʰyésteros",
      "name": "inh"
    }
  ],
  "etymology_text": "From *gesteraz + *-n. The first element is from Proto-Indo-European *dʰǵʰyésteros.",
  "head_templates": [
    {
      "args": {
        "1": "gem-pro",
        "2": "adverb"
      },
      "expansion": "*gesteran",
      "name": "head"
    }
  ],
  "lang": "Proto-Germanic",
  "lang_code": "gem-pro",
  "original_title": "Reconstruction:Proto-Germanic/gesteran",
  "pos": "adv",
  "related": [
    {
      "word": "gestrą"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Proto-Germanic adverbs",
        "Proto-Germanic compound terms",
        "Proto-Germanic entries with incorrect language header",
        "Proto-Germanic lemmas",
        "Proto-Germanic terms derived from Proto-Indo-European",
        "Proto-Germanic terms inherited from Proto-Indo-European",
        "gem-pro:Time"
      ],
      "glosses": [
        "yesterday"
      ],
      "links": [
        [
          "yesterday",
          "yesterday"
        ]
      ],
      "tags": [
        "reconstruction"
      ],
      "wikipedia": [
        "Brill Publishers"
      ]
    }
  ],
  "word": "gesteran"
}