Block letters in Times covering the end of poverty (6)
I believe the answer is:
stymie
'block' is the definition.
('stymie' can be a synonym of 'block')
'letters in times covering the end of poverty' is the wordplay.
'letters in' indicates anagramming the letters.
'covering' indicates putting letters inside.
'the end of' indicates one should take the final letters.
The last letter of 'poverty' is 'y'.
'times' is an anagram of 'stmie'.
'stmie' placed around 'y' is 'STYMIE'.
(Other definitions for stymie that I've seen before include "Thwart - block - my site (anag)" , "Hinder, obstruct, thwart" , "Impede, say golf stroke" , "Thwart (as once was possible on the green)" , "'Hinder, prevent progress (6)'" .)