Clearance above (8)
I believe the answer is:
headroom
(Other definitions for headroom that I've seen before include "Clearance vertically" , "Space available above" , "vertical space" , "Clearance below a bridge or ceiling" , "enough space" .)
I believe the answer is:
headroom
(Other definitions for headroom that I've seen before include "Clearance vertically" , "Space available above" , "vertical space" , "Clearance below a bridge or ceiling" , "enough space" .)