Move hurriedly (4)
(Other definitions for rush that I've seen before include "Stampede - marsh grass" , "Overcharge" , "Water plant; hurry" , "Hasten; plant" , "Be too hasty or too fast" .)
(Other definitions for hustle that I've seen before include "Hurry like sleuth" , "Push and shove - hurry" , "Push roughly, jostle" , "Put pressure on - sleuth (anag)" , "Push around - deal dishonestly" .)
'move hurriedly' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for scurry that I've seen before include "short horse race" , "Move hurriedly" , "Scuttle" , "Rush; scramble" , "Dash (like a mouse?)" .)