exhale

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To breathe out.
2. v. To emit air or vapor.
3. v. To be given off or emitted.
4. v. To blow (something) forth or breathe (something) out.
5. v. To give off; emit: chimneys exhaling dense smoke.

Century Dictionary and Cyclopedia

1. To send out as breath or as if by breathing; emit an effluence of; give out as vapor, either perceptible or imperceptible: as, marshes exhale noxious effluvia.
2. To draw out as an effluence; cause to be sent out or emitted in vapor; evaporate: as, the sun exhales the moisture of the earth.
3. To draw forth; cause to flow, as blood.
4. To rise or pass off as an effluence; go off in vapor.
5. To hale or drag out.
6. To draw, as a sword.
7. To pass through in the form of drops; ooze: noting especially bleeding from a surface in the absence of any wound.

Wiktionary

1. v. intransitive To expel air from the lungs through the nose or mouth by action of the diaphragm.
2. v. intransitive To pass off in the form of vapour; to emerge.
3. v. transitive To expel (something) from the lungs by action of the diaphragm.

GNU Webster's 1913

1. v. To breathe out. Hence: To emit, as vapor; to send out, as an odor; to evaporate
2. v. To draw out; to cause to be emitted in vapor.
3. v. To rise or be given off, as vapor; to pass off, or vanish.

WordNet 3.0

1. v. give out (breath or an odor)
2. v. expel air