- a pause, as for breath.
- vigorous exercise that causes heavy breathing.
- a person who breathes.
- a vent in a container or covering, as in a casing for machinery or in a storage tank, to equalize interior and exterior pressure, permit entry of air, escape of fumes, or the like.
- a device for providing air from the atmosphere to submerged or otherwise sealed-off persons, internal-combustion engines, etc.: the snorkel breather of a submarine.
- a short pause for rest
- a person who breathes in a specified way
- a vent in a container to equalize internal and external pressure, such as the pipe in the crankcase of an internal-combustion engine
- a small opening in a room, container, cover, etc, supplying air for ventilation
