1. Noun

   atrium; well (in building); vault

   see 階段の吹き抜け

2. Noun, Noun or verb acting prenominally

   blow-by; blow-bye; blowout

3. Noun which may take the genitive case particle 'no'

   drafty; draughty

Also written 吹抜け【ふきぬけ】fukinuke