"post scriptum" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "post scriptum"
      },
      "expansion": "Borrowed from Latin post scriptum",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Latin post scriptum.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "head": "post scriptum"
      },
      "expansion": "post scriptum m (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of posdata"
      ],
      "id": "en-post_scriptum-es-noun-f9aJJMUA",
      "links": [
        [
          "posdata",
          "posdata#Spanish"
        ]
      ],
      "synonyms": [
        {
          "word": "P. S."
        },
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "posdata"
        }
      ],
      "tags": [
        "masculine",
        "uncountable"
      ]
    }
  ],
  "word": "post scriptum"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "post scriptum"
      },
      "expansion": "Borrowed from Latin post scriptum",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Latin post scriptum.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "head": "post scriptum"
      },
      "expansion": "post scriptum m (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 4 entries",
        "Pages with entries",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish multiword terms",
        "Spanish nouns",
        "Spanish terms borrowed from Latin",
        "Spanish terms derived from Latin",
        "Spanish uncountable nouns"
      ],
      "glosses": [
        "Synonym of posdata"
      ],
      "links": [
        [
          "posdata",
          "posdata#Spanish"
        ]
      ],
      "synonyms": [
        {
          "word": "P. S."
        },
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "posdata"
        }
      ],
      "tags": [
        "masculine",
        "uncountable"
      ]
    }
  ],
  "word": "post scriptum"
}