Stoppage is a hit (6)
I believe the answer is:
strike
This clue is a double definition.
'stoppage' is the first definition.
(thesaurus)
'a hit' is the second definition.
('strike' can be a synonym of 'hit')
'is' is the link.
(Other definitions for strike that I've seen before include "Industrial dispute - everybody out" , "Do this while the iron is hot" , "Hit out in industrial dispute" , "Downing of tools" , "coin" .)