"psst" meaning in Finnish

{
  "etymology_templates": [
    {
      "args": {
        "1": "fi"
      },
      "expansion": "Onomatopoeic",
      "name": "onomatopoeic"
    }
  ],
  "etymology_text": "Onomatopoeic",
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "intj"
      },
      "expansion": "psst",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Finnish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Finnish onomatopoeias",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "psst"
      ],
      "id": "en-psst-fi-intj-MsZVu4Qz",
      "links": [
        [
          "psst",
          "#English"
        ]
      ],
      "synonyms": [
        {
          "word": "pst"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpsːt/"
    },
    {
      "ipa": "[ˈps̠ːt̪]"
    }
  ],
  "word": "psst"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fi"
      },
      "expansion": "Onomatopoeic",
      "name": "onomatopoeic"
    }
  ],
  "etymology_text": "Onomatopoeic",
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "intj"
      },
      "expansion": "psst",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Finnish entries with incorrect language header",
        "Finnish interjections",
        "Finnish lemmas",
        "Finnish onomatopoeias",
        "Finnish terms with IPA pronunciation",
        "Pages with 3 entries",
        "Pages with entries",
        "fi-pronunciation missing hyphenation or rhymes"
      ],
      "glosses": [
        "psst"
      ],
      "links": [
        [
          "psst",
          "#English"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpsːt/"
    },
    {
      "ipa": "[ˈps̠ːt̪]"
    }
  ],
  "synonyms": [
    {
      "word": "pst"
    }
  ],
  "word": "psst"
}