"2nd person" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "2nd person",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "second person"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "1st person"
        },
        {
          "word": "3rd person"
        }
      ],
      "glosses": [
        "Abbreviation of second person."
      ],
      "id": "en-2nd_person-en-noun-CVVtdbeQ",
      "links": [
        [
          "second person",
          "second person#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "2nd person"
}

{
  "coordinate_terms": [
    {
      "word": "1st person"
    },
    {
      "word": "3rd person"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "2nd person",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "second person"
        }
      ],
      "categories": [
        "English abbreviations",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms spelled with numbers",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Abbreviation of second person."
      ],
      "links": [
        [
          "second person",
          "second person#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "2nd person"
}