Expand general strike (7)
I believe the answer is:
enlarge
'expand' is the definition.
(I know that expand is a kind of enlarge)
'general strike' is the wordplay.
'strike' indicates anagramming the letters (I've seen 'striking' mean this ('strike' can mean 'hit' or 'disrupt')).
'general' anagrammed gives 'ENLARGE'.
(Other definitions for enlarge that I've seen before include "Make bigger, say photo" , "Amplify" , "Blow up" , "Increase in size" , "Dilate" .)