笑逐颜开

[成语]
xiào zhú yán kāi

[含义]
逐：追随；颜：脸面，面容；开：舒展开来。笑得使面容舒展开来。形容满脸笑容，十分高兴的样子。

[来源]
明·施耐庵《水浒全传》第四十二回：“宋江见了，喜从天降，笑逐颜开。”

[例句]
他们听到这个好消息，一个个～。


[英文]
a smile has driven all the hard lines in his face and brightened his countenance