ghost corridor

ghost corridor (plural ghost corridors)

1. A secondary means of egress connecting low-security laboratories through connecting doors, in addition to the main corridor.
2. (Should we delete⁽⁺⁾ this sense?) A corridor of a building that has been connected to supposed ghostly activity.
   • 1860 October 20, “Sanitary Science”, in All The Year Round, page 31:

     There are many houses in Great Britain which have inherited evil reputations; there is a "ghost's room," or "a ghost's corridor," or "a ghost's tower," or "a ghost's terrace."

• "Laboratory Layouts" Architecture Week, 17 September 2003, Page D1.2.
• "Research Laboratories at MaRS, Ryerson University", NXL Architects, undated.