Bellows

1. A device for delivering pressurized air in a controlled quantity to a controlled location. At its most simple terms a bellows is a container which is deformable in such a way as to alter its volume which has an outlet or outlets where one wishes to blow air.

   When wood fires were common, so were bellows for helping start them.

2. Any flexible container or enclosure, as one used to cover a moving joint.
3. The lungs.
4. Flexible, light-tight enclosures connecting the lensboard and the camera back.
5. That which fans the fire of hatred, jealousy, etc.

1. To operate a bellows; to direct air at (something) using a bellows.
2. To expand and contract like a bellows.
3. To fold up like a bellows; to accordion.

noun

The deep roar of a large animal, or any similar loud noise.

1. To make a loud, deep, hollow noise like the roar of an angry bull.
2. To shout in a deep voice.