Search the Dictionary

A chamber or cavity filled with air, in an animal or plant.

insects, birds, plants, etc.; the air vessel of a pump, engine, etc. For the latter, see Air chamber. The air vessels of insects are called tracheæ, of plants spiral vessels.

A structure, usually with an air chamber, placed beneath a vessel to lift or float it.

ch, without any carriage, formerly used chiefly for rejoicings and theatrical cannonades. Air chamber. See Air chamber, in the Vocabulary. -- Chamber of commerce, a board or association to protect the interests of commerce, chosen from among the merchants and traders of a city. -- Chamber council, a secret council. S…

valve at a, the momentum of the current thus suddenly checked forces part of it into the air chamber b, and up the pipe c, its return being prevented by a valve at the entrance to the air chamber, while the dropping of the valve a by its own weight allows another rush through the main pipe, and so on alternately. --…

A bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible.