Third-person singular simple present indicative form of build castles in the air

plural of air kerma rate

plural of compressed-air bath

(historical) A strong metal chamber in which a patient can sit, and into which air is driven by a steam engine to any required pressure; an obsolete form of physical therapy.

A test that measures intraocular pressure (and hence glaucoma risk) by blowing a puff of air at the patient's cornea.

plural of air puff test

(slang, dated) To jilt or ditch a lover.

(chemistry, now historical) Hydrogen chloride (gas).

A commissioned military officer of the highest rank in the United States Air Force, NATO grade OF-10,. This rank is currently out of use.

plural of general of the air force