What is the meaning of phrase come to a head?

The phrase "come to a head" means to reach a critical point or climax. It implies that a situation has been building up and is now at a point where it can no longer be ignored or postponed. It's like a boiling pot that's about to bubble over.

Here are some examples of how it can be used:

* "The tension between the two countries finally came to a head when the border dispute escalated." This means the tension had been building for a while, but it finally reached a point where it could no longer be avoided.

* "Her stress over the project came to a head when she had a panic attack." This means her stress was building up and finally reached a point where it overwhelmed her.

* "The rumors about the CEO's affair finally came to a head when the newspaper published an article about it." This means the rumors had been circulating for a while but finally reached a point where they were made public.

The phrase "come to a head" can be used in both literal and figurative contexts. For example, you could say "The boil on my arm came to a head" or "The argument with my friend came to a head." In both cases, it means the situation reached a point where something had to be done.