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Jyutping gaap3 sam1 beng2 gon1
Pinyin jiā xīn bǐng gān

Definitions (Wiktionary)
  1. noun
    cookie sandwich
    (syn.) 夾心餅, 夹心馅饼, 夹心饼, 夾心餡餅

夾心餅乾 [夹-饼干]

Jyutping
Pinyin jiā xīn bǐng gān

Definitions (CC-CEDICT)
  1. sandwich cookie
  2. (jocular) sb who is caught between two opposing parties; sb who is between the hammer and the anvil