鼠海豚 shǔhǎitún porpoise Definitions Defs Origin Strokes Stroke Words Sentences Sents 鼠 shǔ noun rat (bound form) rat; mouse; any of various small rodents海豚 hǎitún noun dolphin A streamlined marine mammal with a small head and pointed mouth that often swims in groups; known for being highly intelligent and capable of learning complex tasks.