Stock reactions to panic (8)

I believe the answer is:

stampede

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'to panic' is the definition.
('stampede' can be a synonym of 'panic')

I don't understand the rest of the clue.

(Other definitions for stampede that I've seen before include "Headlong rush of a group in panic" , "Run in panic" , "Crazy pets made a sudden rush" , "Panic-stricken charge of cattle" , "Sudden mass rush" .)

I've seen this clue in The Globe and Mail.

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