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Jyutping faa1 sam1 zi2
Pinyin huā xīn zi

Definitions (Wiktionary)
  1. noun, Jin, Mandarin, Wu, Xiang, dialectal, including
    stamen and gynoecium
    (syn.) 花心, 花心心子, 花兒心子, 花蕊兒, 花蕊, 花鬚子, 蕊, 花兒心心, 花心心, 花心心兒, 花兒心, 花兒心兒, 花心門兒, 花心兒, 花心子