Panicked rush (8)
I believe the answer is:
stampede
'panicked rush' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for stampede that I've seen before include "Run in panic" , "Headlong rush of animals" , "Sudden mass rush" , "Uncontrolled rush" , "Sudden dash of a group of startled animals" .)