Can't he keep up with prison life? (3)
I believe the answer is:
lag
This could be a double definition.
'can't he keep up' is the first definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'prison life?' is the second definition.
The answer and definition can be both related to time as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'with' acts as a link.
Can you help me to learn more?
(Other definitions for lag that I've seen before include "Ex-convict" , "An old one is a convict" , "Fall behind with gal" , "Drag one's feet" , "Cover pipes" .)