Groom, after doffing cap, taken down (5)
I believe the answer is:
eaten
'taken down' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for eaten that I've seen before include "Crammed" , "Gobbled" , "absorbed in the system" , "having taken courses?" , "Swallowed" .)