"-pen" meaning in Basque

{
  "etymology_links": [
    [
      "-men",
      "-men#Basque"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "eu",
        "2": ":der<unc>",
        "3": "-men",
        "id": "outcome suffix",
        "tree": "1"
      },
      "expansion": "[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Basque\", \"term\" : \"-men\", \"status\" : \"missing\", \"lang\" : \"eu\" } ], \"keyword\" : \"derived\" } ], \"status\" : \"ok\", \"lang_name\" : \"Basque\", \"term\" : \"-pen\", \"lang\" : \"eu\" }\" data-id=\"outcome suffix\" data-lang=\"eu\" data-title=\"-pen\" id=\"Basque:_outcome_suffix\">",
      "name": "ety"
    },
    {
      "args": {
        "1": "syncope"
      },
      "expansion": "syncope",
      "name": "glossary"
    },
    {
      "args": {
        "1": "eu",
        "2": ":der<unc>",
        "3": "-men",
        "id": "outcome suffix",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *-mn̥\nProto-Indo-European *-mn̥tom\nProto-Italic *-mentom\nLatin -mentumbor.\nBasque -menduclip.?\nBasque -mender.?\nBasque -pen",
      "name": "ety"
    }
  ],
  "etymology_text": "Most likely originated as a syncope of -tamen, occuring when -men was affixed to a verbal noun ending in -te instead of a short form of a verb. Later reinterpreted as a separate suffix affixable to a short form.",
  "head_templates": [
    {
      "args": {
        "1": "eu",
        "2": "suffix"
      },
      "expansion": "-pen",
      "name": "head"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Basque entries with etymology trees",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Basque entries with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Basque entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using etymon with no ID",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymology trees",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymon",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "itzuli (“to translate”) + -pen → itzulpen (“translation”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Forming nouns expressing outcome of an action"
      ],
      "id": "en--pen-eu-suffix-~oBxnDPy",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-pen"
}

{
  "etymology_links": [
    [
      "-men",
      "-men#Basque"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "eu",
        "2": ":der<unc>",
        "3": "-men",
        "id": "outcome suffix",
        "tree": "1"
      },
      "expansion": "[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Basque\", \"term\" : \"-men\", \"status\" : \"missing\", \"lang\" : \"eu\" } ], \"keyword\" : \"derived\" } ], \"status\" : \"ok\", \"lang_name\" : \"Basque\", \"term\" : \"-pen\", \"lang\" : \"eu\" }\" data-id=\"outcome suffix\" data-lang=\"eu\" data-title=\"-pen\" id=\"Basque:_outcome_suffix\">",
      "name": "ety"
    },
    {
      "args": {
        "1": "syncope"
      },
      "expansion": "syncope",
      "name": "glossary"
    },
    {
      "args": {
        "1": "eu",
        "2": ":der<unc>",
        "3": "-men",
        "id": "outcome suffix",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *-mn̥\nProto-Indo-European *-mn̥tom\nProto-Italic *-mentom\nLatin -mentumbor.\nBasque -menduclip.?\nBasque -mender.?\nBasque -pen",
      "name": "ety"
    }
  ],
  "etymology_text": "Most likely originated as a syncope of -tamen, occuring when -men was affixed to a verbal noun ending in -te instead of a short form of a verb. Later reinterpreted as a separate suffix affixable to a short form.",
  "head_templates": [
    {
      "args": {
        "1": "eu",
        "2": "suffix"
      },
      "expansion": "-pen",
      "name": "head"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Basque entries with etymology trees",
        "Basque entries with etymon",
        "Basque entries with incorrect language header",
        "Basque lemmas",
        "Basque suffixes",
        "Basque terms derived from Latin",
        "Basque terms derived from Proto-Indo-European",
        "Basque terms derived from Proto-Italic",
        "Pages using catfix",
        "Pages using etymon with no ID",
        "Pages with 1 entry",
        "Pages with entries",
        "Pages with etymology trees",
        "Pages with etymon"
      ],
      "examples": [
        {
          "text": "itzuli (“to translate”) + -pen → itzulpen (“translation”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Forming nouns expressing outcome of an action"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-pen"
}