Assimilate a summary (6)
I believe the answer is:
digest
This clue is a double definition.
'assimilate' is the first definition.
(I've seen this before)
'a summary' is the second definition.
(I've seen this before)
(Other definitions for digest that I've seen before include "Absorb, food or information" , "Periodical that summarises the news" , "Assimilate - summary" , "Take in - collected rules of laws" , "Long walk, itinerant person" .)