岩いわ牡蠣がきMeaningsNoun1. Iwagaki oyster (Crassostrea nippona)Other spellings岩いわガキ岩いわがきUsage share unknownKanji used岩boulder牡male animal蠣oysterComposed of岩いわrock; boulder; cragNoun牡蠣かきoyster; oyster shellNoun