Engrossed as a camper? (6)
I believe the answer is:
intent
'engrossed' is the definition.
(I know that engrossed can be written as intent)
'as a camper?' is the wordplay.
'as' becomes 'in' (I've seen this in other clues).
'a camper?' becomes 'tent' (I am not sure about this - if you are sure you should believe this answer much more).
'in'+'tent'='INTENT'
Can you help me to learn more?
(Other definitions for intent that I've seen before include "Meaning -- determined" , "Firm - plan - steadfast - purpose" , "With mind fixed on purpose, concentrated" , "wrapped up" , "With attention concentrated, bent on" .)