Compounds of 洞

• 洞
  (n) hollow
  cavity
  hole
• 洞
  (n) cave
  den
  grotto
  (P)
• 空洞
  (n) cave
  hollow
  cavity
  (P)
• 晶洞
  (n) druse (globular calcium oxalate crystals, often lining a rock cavity)
• 雪洞
  (n) snow cave
• 雪洞
  (n) paper-covered lamp or lantern
• 洞角
  (n) hollow horn
  cavicorn
• 洞窟
  (n,adj-no) cave
  (P)
• 洞穴
  (n) cave
  den
  grotto
  (P)
• 洞穴
  (n) cave
  den
  grotto
• 洞見
  (n,vs) insight
  discernment
• 洞察
  (n,vs) discernment
  insight
  (P)
• 洞門
  (n) cave entrance
  tunnel
• 洞簫
  (n) dongxiao (Chinese bamboo flute similar to a shakuhachi)
• 風洞
  (n) wind tunnel
• 海食洞
  (n) sea cave
  marine cave
• 空洞化
  (n,vs) making hollow
  making meaningless
• 鍾乳洞
  (n) limestone cave (cavern, grotto)
  (P)
• 鐘乳洞
  (n) limestone cave (cavern, grotto)
• 石灰洞
  (n) limestone cave
• 曹洞宗
  (n) Soto school of Buddhism
• 洞井守
  (n) (uk) olm (Proteus anguinus)
• 洞察力
  (n) insight
  discernment
  perception
  perspicacity
  acumen
• 空洞化現象
  (n) (economic) hollowing-out phenomenon
• 洞爺湖サミット
  (n) G8 Hokkaido Toyako Summit
  Hokkaido Toyako G8 summit