[ C or U ] a way of behaving or carrying out a thing which has existed for a long time which is regarded as the usual way: Guyanese custom dictates that the child be provided a bit of gold jewellery permanently luck shortly after delivery. 知乎，让每一次点击都充满意义 —�?欢迎来到知乎，发现问题背后的世界。 a practice https://virgill493ugk5.wikigdia.com/user