"pens" meaning in Middle English

{
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "noun form"
      },
      "expansion": "pens",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Middle English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 9 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "… ‘Give me twelve pence, I can no longer tarry.’",
          "ref": "late 14th century, Geoffrey Chaucer, The Friar's Tale, The Canterbury Tales, line 1603",
          "text": "[...] ‘Yif me twelf pens, I may no lenger tarie.’",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "penny",
          "word": "peny"
        }
      ],
      "glosses": [
        "plural of peny (“penny”)"
      ],
      "id": "en-pens-enm-noun-xHm6o7s1",
      "links": [
        [
          "peny",
          "peny#Middle_English"
        ]
      ],
      "synonyms": [
        {
          "word": "penies"
        },
        {
          "word": "panes"
        },
        {
          "word": "pans"
        }
      ],
      "tags": [
        "form-of",
        "plural"
      ]
    }
  ],
  "word": "pens"
}

{
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "noun form"
      },
      "expansion": "pens",
      "name": "head"
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  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Middle English entries with incorrect language header",
        "Middle English non-lemma forms",
        "Middle English noun forms",
        "Middle English terms with quotations",
        "Pages with 9 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "… ‘Give me twelve pence, I can no longer tarry.’",
          "ref": "late 14th century, Geoffrey Chaucer, The Friar's Tale, The Canterbury Tales, line 1603",
          "text": "[...] ‘Yif me twelf pens, I may no lenger tarie.’",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "penny",
          "word": "peny"
        }
      ],
      "glosses": [
        "plural of peny (“penny”)"
      ],
      "links": [
        [
          "peny",
          "peny#Middle_English"
        ]
      ],
      "synonyms": [
        {
          "word": "penies"
        }
      ],
      "tags": [
        "form-of",
        "plural"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "panes"
    },
    {
      "word": "pans"
    }
  ],
  "word": "pens"
}