[noun] [U]The room was damp and smelly so we opened all the windows and gave it a good airing (= made the air fresh and dry).(UK) An airing cupboard is a heated cupboard where clothes, sheets, etc. that have been washed and are almost dry are put so that they can become completely dry.
AIRING
Meaning of AIRING in English
Cambridge English vocab. Кембриджский английский словарь. 2012