Literally about breathing:
* Hold your breath: To wait anxiously or with anticipation.
* Catch your breath: To regain your breath after exertion or excitement.
* Take a deep breath: To relax or calm down.
* Out of breath: Exhausted from physical exertion.
* Breathe a sigh of relief: To feel relieved after a period of stress or anxiety.
* Take your breath away: To be incredibly beautiful or impressive.
Figuratively about breath:
* Don't breathe a word: To keep something secret.
* Not a breath of wind: Completely calm and still.
* Have the breath knocked out of you: To be shocked or surprised.
* Take a breath of fresh air: To be a welcome change or relief.
* Waste your breath: To talk to someone who is not listening or will not understand.
* Fight for breath: To struggle to survive or overcome a difficult situation.
* Get your second wind: To regain energy and enthusiasm after feeling tired.
* One breath away from death: Extremely close to dying.
Other phrases with "breath" that aren't necessarily idioms:
* Breath of life: The essence or spirit of something.
* A breath of fresh air: A pleasant change or new experience.
* Breathtaking: Extremely beautiful or impressive.
These are just a few examples, and there are many more idioms and phrases that use the word "breath." The specific meaning of an idiom can vary depending on the context, so it's always important to consider the surrounding words and phrases to understand the intended meaning.