酸棗仁 [－枣－]

Jyutping syun1 zou2 jan4
Pinyin suān zǎo rén

Definitions (Wiktionary)
  1. noun
    seed of Ziziphus spinosa (An herb used in traditional Chinese medicine to calm the mind, promote sleep, treat hypertension, palpitation and poor memory; also used as a "yin" tonic.)