杜宇 dùyǔ cuckoo Definitions Defs Origin Strokes Stroke Words Sentences Sents dùyǔ cuckoo 杜 dù opaque (segment carries no independent meaning) 宇 yǔ opaque (segment carries no independent meaning) dùyǔ Du Yu 杜 dù Du a Chinese surname宇 yǔ surname a Chinese surname