What is the idiomatic meaning of coffee break?

The idiomatic meaning of "coffee break" is simply a short break from work, typically for the purpose of having coffee or another beverage.

However, it's important to note that the term has evolved to encompass more than just coffee. It can also refer to a break for:

* Other refreshments: Tea, juice, water, snacks, etc.

* Relaxation: A brief time to unwind and recharge, even without a drink.

* Socializing: A chance to chat with colleagues or friends.

Essentially, it's a short pause in the day's activities to take a moment for oneself.