Trap disheartened one looking into death (6)
I believe the answer is:
corner
'trap' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
(Other definitions for corner that I've seen before include "Where two lines or walls meet" , "Point where two lines meet" , "Angle; trap" , "Piece of bacon" , "Angle formed by two meeting walls" .)