壙穴 [圹－]

Jyutping 壙 jyut6
Pinyin kuàng xué

Definitions (Wiktionary)
  1. noun, literary
    coffin pit; grave
    (syn.) 墓壙, 墓圹, 窀穸, 泉壤, 墓壙空, 墓穴, 室, 玄宅, 墓圹空, 墓窟