"psł." meaning in Polish

{
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "psł. m inan",
      "name": "pl-noun"
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "prasłowiański"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of prasłowiański."
      ],
      "id": "en-psł.-pl-noun-i-0XjL1X",
      "links": [
        [
          "prasłowiański",
          "prasłowiański#Polish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pras.wɔˈvjaɲ.ski/"
    },
    {
      "rhymes": "-aɲski"
    }
  ],
  "word": "psł."
}

{
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "psł. m inan",
      "name": "pl-noun"
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "prasłowiański"
        }
      ],
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Polish 4-syllable words",
        "Polish abbreviations",
        "Polish entries with incorrect language header",
        "Polish inanimate nouns",
        "Polish lemmas",
        "Polish masculine nouns",
        "Polish nouns",
        "Polish terms spelled with .",
        "Polish terms with IPA pronunciation",
        "Rhymes:Polish/aɲski"
      ],
      "glosses": [
        "Abbreviation of prasłowiański."
      ],
      "links": [
        [
          "prasłowiański",
          "prasłowiański#Polish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pras.wɔˈvjaɲ.ski/"
    },
    {
      "rhymes": "-aɲski"
    }
  ],
  "word": "psł."
}