珊瑚礁 shānhújiāo coral reef Origin Definitions Defs Strokes Stroke Words Sentences Sents 珊瑚 shānhú noun coral The stony skeleton of coral polyps; often branched like a tree and used in jewelry or as decoration.礁 jiāo noun biogenic reef (bound form) a rock-like structure formed by the skeletons of living organisms, such as coral reefs