An exhalation.
To draw out; to cause to be emitted in vapour.
To pass off in the form of vapour; to emerge.
To expel (something, such as tobacco smoke) from the lungs by action of the diaphragm.
To expel air from the lungs through the nose or mouth by action of the diaphragm, to breathe out.
To emit (a vapour, an odour, etc.).
Any small aperture or vent for air or other fluid.
A pore or opening used (especially by arthropods and some fish) for respiration.
The blowhole of a whale, dolphin or other similar species.