come to a head字面意思是“到头”,它没有任何的意义,而且也不是结束的意思，可以意为“到了危急关头,到达关键点,到达关键时刻"等,寓意。

【例句】
Now, as these and several other matters come to a head, you can tackle them together.
现在，这些和其他的一些什么问题已经到了危急关头，不过你能同时应付他们。

Things hadn't been good between us for a while and this incident just brought it to a head.
我们之间的关系恶化有一段时间了，而这件事更是雪上加霜。