Vocabulary What does 岩礁 (がんしょう, ganshou) mean? 岩礁 (がんしょう, ganshou) means reef. Quick factsReadingがんしょうRomajiganshouPart of speechnoun 岩礁がんしょうganshoureef1noun reefKanji in this word岩rock, boulder礁reef, shoal