airing

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Exposure to air for freshening or drying.
• noun Exposure to open air for exercise or the promotion of health.
• noun Exposure to public attention.
• noun A radio or television broadcast.

from The Century Dictionary.

• noun An exposure to the air, or to a fire, for drying or warming.
• noun Exercise in or exposure to the open air; an excursion for the purpose of taking the air.

from the GNU version of the Collaborative International Dictionary of English.

• noun A walk or a ride in the open air; a short excursion for health's sake.
• noun An exposure to air, or to a fire, for warming, drying, etc..

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb Present participle of air.
• noun uncountable An exposure to warm or fresh air.
• noun countable A public expression of an opinion or discussion of a subject.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a short excursion (a walk or ride) in the open air
• noun the act of supplying fresh air and getting rid of foul air
• noun the opening of a subject to widespread discussion and debate