"ㄙ" meaning in 漢語

{
  "categories": [
    {
      "kind": "other",
      "name": "漢語紅鏈",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "漢語紅鏈/l",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_text": "源自漢字厶 (sī)，私 (sī)（sī）的古字。",
  "lang": "漢語",
  "lang_code": "zh",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "官話紅鏈",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "官話紅鏈/l",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "注音符號中的第21個。前一個是ㄘ，後一個是ㄚ。"
      ],
      "id": "zh-ㄙ-zh-character-RQIHR7gm"
    }
  ],
  "sounds": [
    {
      "ipa": "/s/"
    },
    {
      "ipa": "/sz̩˥˥/"
    }
  ],
  "word": "ㄙ"
}

{
  "categories": [
    "漢語紅鏈",
    "漢語紅鏈/l"
  ],
  "etymology_text": "源自漢字厶 (sī)，私 (sī)（sī）的古字。",
  "lang": "漢語",
  "lang_code": "zh",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "官話紅鏈",
        "官話紅鏈/l"
      ],
      "glosses": [
        "注音符號中的第21個。前一個是ㄘ，後一個是ㄚ。"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/s/"
    },
    {
      "ipa": "/sz̩˥˥/"
    }
  ],
  "word": "ㄙ"
}