"POLSA" meaning in English

{
  "forms": [
    {
      "form": "POLSAs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "POLSA (plural POLSAs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "police search advisor"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2020, Ben Aaronovitch, False Value, Gollancz, page 72",
          "text": "There was no sign of the stolen music book – weʼd bring in a proper POLSA team of course, but I was willing to bet money that they wouldnʼt find anything.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Acronym of police search advisor."
      ],
      "id": "en-POLSA-en-noun-FroV7eSH",
      "links": [
        [
          "police search advisor",
          "police search advisor#English"
        ]
      ],
      "raw_glosses": [
        "(UK) Acronym of police search advisor."
      ],
      "tags": [
        "UK",
        "abbreviation",
        "acronym",
        "alt-of"
      ]
    }
  ],
  "word": "POLSA"
}

{
  "forms": [
    {
      "form": "POLSAs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "POLSA (plural POLSAs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "police search advisor"
        }
      ],
      "categories": [
        "British English",
        "English acronyms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry"
      ],
      "examples": [
        {
          "ref": "2020, Ben Aaronovitch, False Value, Gollancz, page 72",
          "text": "There was no sign of the stolen music book – weʼd bring in a proper POLSA team of course, but I was willing to bet money that they wouldnʼt find anything.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Acronym of police search advisor."
      ],
      "links": [
        [
          "police search advisor",
          "police search advisor#English"
        ]
      ],
      "raw_glosses": [
        "(UK) Acronym of police search advisor."
      ],
      "tags": [
        "UK",
        "abbreviation",
        "acronym",
        "alt-of"
      ]
    }
  ],
  "word": "POLSA"
}