Pressure on agent bad in Defense Department (8)
I believe the answer is:
pentagon
'defense department' is the definition.
The answer and definition can be both groups as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'pressure on agent bad' is the wordplay.
'pressure' becomes 'p' (abbreviation).
'bad' is an anagram indicator.
'on'+'agent'='onagent'
'onagent' with letters rearranged gives 'entagon'.
'p'+'entagon'='PENTAGON'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for pentagon that I've seen before include "rectangle snipped at one corner?" , "Location of the US Department of Defense" , "top brass" , "Headquarters of the US Defence Department" , "Geometric figure with five sides" .)