書函 [书－]

Jyutping syu1 haam4
Pinyin shū hán

Definitions (Wiktionary)
  1. noun
    letter; correspondence; written correspondence
  2. noun
    slipcase; book cover
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）

書函 [书－]

Jyutping
Pinyin shū hán

Definitions (CC-CEDICT)
  1. letter
  2. correspondence
  3. slipcase