From Longman Dictionary of Contemporary Englishairing cupboardˈairing ˌcupboard noun [countable] British English a warm cupboard in a house where you keep sheets
Examples from the Corpus
airing cupboard• Even a well-lagged cylinder will still give off enough heat to air clothes if your cylinder is in an airing cupboard.• A discussion I overheard concerned the merits of an airing cupboard as winter quarters for fly-traps.• Unfortunately there was no airing cupboard.• Separate airing cupboard with foam dipped hot water cylinder, immersion heater and timer for boiler.• Louise had baked a pie for him and was bringing a new pair of sheets from the airing cupboard.• In winter, put them in the airing cupboard.• Neither the airing cupboard nor the garden shed in winter are satisfactory. 