breath

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The act or process of breathing; respiration.
• noun A single act of breathing.
• noun The air inhaled and exhaled in respiration.
• noun Air that is exhaled, as evidenced by vapor or odor.
• noun The capacity to breathe, especially in a natural and unlabored manner.
• noun Spirit or vitality.
• noun A momentary pause or rest.
• noun A momentary stirring of air.
• noun A softly spoken sound; a whisper.
• noun Linguistics Exhalation of air without vibration of the vocal cords, as in the articulation of p and s.
• idiom (one/the same) At or almost at the same time.
• idiom (out of breath) Breathing with difficulty, as from exertion; gasping.
• idiom (under (one's) breath) In a muted voice or whisper.

from The Century Dictionary.

• noun Vapor; steam; exhalation.
• noun The air inhaled and exhaled in respiration.
• noun Ability to breathe; life as dependent on respiration.
• noun The state or power of breathing freely: as, to be out of breath; to be in breath.
• noun A single act of breathing; a respiration: as, he swears at every breath; to draw a full breath.
• noun Hence The time of a single respiration; a single act; an instant.
• noun Respite; pause; time to breathe.
• noun A gentle exercise, causing a quicker respiration.
• noun A respiratory movement, as of free air; a blowing.
• noun Spoken words; speech.
• noun A mere word; a trivial circumstance; a thing without substance; a trifle.
• noun An odorous exhalation.
• noun In philology, a breathing; aspiration; aspirate sound.
• noun Opinion; sentiments: as, I would fain hear his breath on this matter.

from the GNU version of the Collaborative International Dictionary of English.

• noun The air inhaled and exhaled in respiration; air which, in the process of respiration, has parted with oxygen and has received carbonic acid, aqueous vapor, warmth, etc.
• noun The act of breathing naturally or freely; the power or capacity to breathe freely.
• noun The power of respiration, and hence, life.
• noun Time to breathe; respite; pause.
• noun A single respiration, or the time of making it; a single act; an instant.
• noun Fig.: That which gives or strengthens life.
• noun A single word; the slightest effort; a trifle.
• noun A very slight breeze; air in gentle motion.
• noun Fragrance; exhalation; odor; perfume.
• noun Gentle exercise, causing a quicker respiration.
• noun breathless, exhausted; breathing with difficulty.
• noun in low tones.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable The act or process of breathing.
• noun countable A single act of breathing in or out.
• noun uncountable Air expelled from the lungs.
• noun countable A rest or pause.
• noun a small amount of something, such as wind, or common sense

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the process of taking in and expelling air during breathing
• noun a slight movement of the air
• noun an indirect suggestion
• noun a short respite