Physical instruction book (6)
I believe the answer is:
manual
This could be a double definition.
'physical' is the first definition.
Both the definition and answer are adjectives. Maybe there's an association between them I don't understand?
'instruction book' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for manual that I've seen before include "Done with the hands" , "Handy" , "Operated by hand" , "Working with the hands" , "Involving human effort" .)