Impale; try (4)
I believe the answer is:
stab
I believe this clue is a double definition.
'impale' is the first definition.
(I've seen this before)
'try' is the second definition.
(I've seen this before)
(Other definitions for stab that I've seen before include "Impale; attempt" , "effort" , "Wound with a dagger" , "Wound with blade" , "Puncture" .)