Breathe/briːð/ Definition 1 of 5Pro Tip 1/3Physical Act The word implies the physical process of moving air in and out of the lungs. Remember to breathe slowly during meditation. Pro Tip 2/3Health Context Often used in health and fitness to emphasize proper breathing techniques. The coach instructed her to breathe through her nose. Pro Tip 3/3Stress Relief Breathing is associated with relaxation and reducing stress in many cultures. Breathe deeply to calm your nerves before the performance.