Clearance for Max? (8)
I believe the answer is:
headroom
This clue might be a double definition.
'clearance' is the first definition.
(synonyms)
'max?' is the second definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
'for' is the link.
Can you help me to learn more?
(Other definitions for headroom that I've seen before include "vertical space" , "enough space" , "Clearance below a bridge or ceiling" , "Space available above" , "Clearance vertically" .)