When you breathe you take air into your lungs and let it out in a regular rhythm. Living things need to breathe to live.
This word has several meanings related to living and taking in air. When someone says "As long as I breathe!" they mean "As long as I live!" In music, some silence can let the piece breathe. If you need a moment or room to breathe, you need a break. Wine breathes when it’s uncorked, enhancing its flavor. Breathing life into something gives it new energy. If this explanation has made you nervous, breathe deeply — that helps many people to relax.