Enlist a revolutionary for striking (7)
I believe the answer is:
salient
'for striking' is the definition.
(synonyms)
'enlist a revolutionary' is the wordplay.
'revolutionary' indicates an anagram.
'enlist'+'a'='enlista'
'enlista' with letters rearranged gives 'SALIENT'.
(Other definitions for salient that I've seen before include "Entails being most noticeable" , "Noteworthy" , "Prominent, most noticeable" , "defence work" , "Outstanding - it's lean (anag)" .)