"៍" meaning in Khmer

{
  "forms": [
    {
      "form": "៍",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "km",
        "2": "diacritical mark"
      },
      "expansion": "៍ • (៍)",
      "name": "head"
    }
  ],
  "lang": "Khmer",
  "lang_code": "km",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Khmer diacritical marks",
          "parents": [
            "Diacritical marks",
            "Letters, symbols, and punctuation",
            "Symbols",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Khmer entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The killer, which suppresses—or kills—the letter over which it is written, causing it to be silent. See also ទណ្ឌឃាដ (tŏəndĕəʼkhiət)."
      ],
      "id": "en-៍-km-character-m4PtoU8F",
      "links": [
        [
          "killer",
          "killer"
        ],
        [
          "ទណ្ឌឃាដ",
          "ទណ្ឌឃាដ#Khmer"
        ]
      ],
      "tags": [
        "diacritic"
      ]
    }
  ],
  "word": "៍"
}

{
  "forms": [
    {
      "form": "៍",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "km",
        "2": "diacritical mark"
      },
      "expansion": "៍ • (៍)",
      "name": "head"
    }
  ],
  "lang": "Khmer",
  "lang_code": "km",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "Khmer diacritical marks",
        "Khmer entries with incorrect language header",
        "Khmer lemmas"
      ],
      "glosses": [
        "The killer, which suppresses—or kills—the letter over which it is written, causing it to be silent. See also ទណ្ឌឃាដ (tŏəndĕəʼkhiət)."
      ],
      "links": [
        [
          "killer",
          "killer"
        ],
        [
          "ទណ្ឌឃាដ",
          "ទណ្ឌឃាដ#Khmer"
        ]
      ],
      "tags": [
        "diacritic"
      ]
    }
  ],
  "word": "៍"
}