n. The act or process of exhaling, or emitting as an effluence; evaporation.n. That which is exhaled; that which is emitted as or like breath, or which rises in the form of vapor; emanation; effluvium: as, exhalations from marshes, animal or vegetable bodies, decaying matter, and other substances.n. In heraldry, a representation of a waterspout, a torrent of rain falling from a cloud, or some similar meteorological phenomenon: a rare bearing, used as a rebus by a person whose name allows of it.