The nut that got caught, a prison holds captive (5)
I believe the answer is:
pecan
'the nut that got caught a prison holds captive' is the definition.
'pecan' can be an answer for 'the nut' (pecan is a kind of nut). I'm not certain of the rest of the definition.
'the nut that got caught a' is the wordplay.
'the nut' becomes 'pe' (I am not sure about this - if you are sure you should believe this answer much more).
'that got' means one lot of letters go next to another.
'caught' becomes 'c' (cricket abbreviation).
'a' becomes 'an'.
'pe'+'c'+'an'='PECAN'
Can you help me to learn more?
(Other definitions for pecan that I've seen before include "Nutty type" , "Nut tree of the southern United States and Mexico" , "Nut of American hickory tree" , "Type of nut" , "nut-tree" .)