"PLG" meaning in Latin

{
  "head_templates": [
    {
      "args": {
        "1": "PLG<0>",
        "g": "m",
        "num": "pl"
      },
      "expansion": "PLG m pl (indeclinable)",
      "name": "la-proper noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Poētae lyricī Graecī"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "New Latin",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Poētae lyricī Graecī."
      ],
      "id": "en-PLG-la-name-OJ9MRBTd",
      "links": [
        [
          "Poētae",
          "poeta#Latin"
        ],
        [
          "lyricī",
          "lyricus#Latin"
        ],
        [
          "Graecī",
          "Graecus#Latin"
        ]
      ],
      "raw_glosses": [
        "(New Latin) Initialism of Poētae lyricī Graecī."
      ],
      "tags": [
        "New-Latin",
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism",
        "masculine",
        "plural"
      ]
    }
  ],
  "word": "PLG"
}

{
  "head_templates": [
    {
      "args": {
        "1": "PLG<0>",
        "g": "m",
        "num": "pl"
      },
      "expansion": "PLG m pl (indeclinable)",
      "name": "la-proper noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Poētae lyricī Graecī"
        }
      ],
      "categories": [
        "Latin entries with incorrect language header",
        "Latin indeclinable nouns",
        "Latin initialisms",
        "Latin lemmas",
        "Latin masculine indeclinable nouns",
        "Latin masculine nouns",
        "Latin pluralia tantum",
        "Latin proper nouns",
        "New Latin",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Initialism of Poētae lyricī Graecī."
      ],
      "links": [
        [
          "Poētae",
          "poeta#Latin"
        ],
        [
          "lyricī",
          "lyricus#Latin"
        ],
        [
          "Graecī",
          "Graecus#Latin"
        ]
      ],
      "raw_glosses": [
        "(New Latin) Initialism of Poētae lyricī Graecī."
      ],
      "tags": [
        "New-Latin",
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism",
        "masculine",
        "plural"
      ]
    }
  ],
  "word": "PLG"
}