Physical, tangible (8)
I believe the answer is:
concrete
I believe this is a double definition.
'physical' is the first definition.
(thesaurus)
'tangible' is the second definition.
(similar in meaning)
(Other definitions for concrete that I've seen before include "Firm" , "It's composed of sand, cement and water" , "Solid, real" , "Specific - building material" , "Unsightly building material" .)