"er." meaning in All languages combined

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "er.",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "ermine"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Heraldic tinctures",
          "orig": "en:Heraldic tinctures",
          "parents": [
            "Colors",
            "Heraldry",
            "Light",
            "Vision",
            "History",
            "Energy",
            "Senses",
            "All topics",
            "Nature",
            "Perception",
            "Fundamental",
            "Body",
            "Human"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of ermine."
      ],
      "id": "en-er.-en-noun-RwtJomKC",
      "links": [
        [
          "heraldry",
          "heraldry"
        ],
        [
          "ermine",
          "ermine#English"
        ]
      ],
      "raw_glosses": [
        "(heraldry) Abbreviation of ermine."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "government",
        "heraldry",
        "hobbies",
        "lifestyle",
        "monarchy",
        "nobility",
        "politics"
      ]
    }
  ],
  "word": "er."
}

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "er.",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "ermine"
        }
      ],
      "categories": [
        "English abbreviations",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms spelled with .",
        "en:Heraldic tinctures"
      ],
      "glosses": [
        "Abbreviation of ermine."
      ],
      "links": [
        [
          "heraldry",
          "heraldry"
        ],
        [
          "ermine",
          "ermine#English"
        ]
      ],
      "raw_glosses": [
        "(heraldry) Abbreviation of ermine."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "government",
        "heraldry",
        "hobbies",
        "lifestyle",
        "monarchy",
        "nobility",
        "politics"
      ]
    }
  ],
  "word": "er."
}