潛望鏡 [潜－镜]

Jyutping cim4 mong6 geng3
Pinyin qián wàng jìng

Definitions (CC-CEDICT)
  1. periscope
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. noun
    periscope (viewing device)
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）