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Jyutping hoi2 gwaa1 zi2
Pinyin hǎi guā zǐ

Definitions (CC-CEDICT)
  1. Tellina iridescens (a bivalve mollusk)
  2. any similar small clam
Definitions (Wiktionary)
  1. noun
    Musculus senhousei (a kind of mussel)
    (syn.) 薄壳, 薄殼