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Jyutping caam4 ngaam4
Pinyin chán yán

Definitions (Wiktionary)
  1. noun, literary
    precipitous rock
  2. adj, literary
    precipitous; steep
    (syn.) 壁立, 巀嶭, 峭, 高峻, 崒, 陡峭, 筆陡, 陡, 险峻, 笔陡, 岢峻, 嶔崟, 崎, 巉峻, 陡直, 岢峨, 嵚崟, 險峻, 巉巉, 峻峭, 嶜崟