Breath  n. 1 a air drawn into or expelled from the lungs. B one respiration of air. C breath as perceived by the senses. 2 a slight movement of air. B whiff (of perfume etc.). 3 whisper, murmur (esp. Of scandal).  catch one's breath 1 cease breathing momentarily in surprise etc. 2 rest to restore normal breathing. Hold one's breath cease breathing temporarily. Out of breath gasping for air, esp. After exercise. Take one's breath away surprise, delight, etc. Under one's breath in a whisper. [old english]