Examples from literature

• The man certainly did mean to tell him so, for he opened the door no more than a foot, and stood in that narrow aperture. 
• There was a kind of portico or colonnade outside, and this obstructed even the little light that at the best could have found its way through the small apertures in the door. 
• They consist essentially of a lamp in a reflector whose aperture is closed with a sheet or a lens of clear glass. 
• They stole swiftly across the room and peered through the little apertures which lighted the place. 
• This temple consisted of nine vaults, situated perpendicularly beneath each other, and communicating by apertures left in each vault.