Angry, finding sack in lethal environment (9)
I believe the answer is:
crossfire
'lethal environment' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'angry finding sack' is the wordplay.
'angry' becomes 'cross' (cross can mean annoyed or angry).
'finding' is a charade indicator (letters next to each other).
'sack' becomes 'fire' (both can mean to dismiss from a job).
'cross'+'fire'='CROSSFIRE'
'in' is the link.
Can you help me to learn more?
(Other definitions for crossfire that I've seen before include "lively exchange of views" , "argument" , "fierce exchange" , "bullets coming from all sides" , "Hail of bullets" .)