Dash marked with initial of engraver (8)

I believe the answer is:

stampede

I'm a little stuck... Click here to teach me more about this clue!

'dash' is the definition.
(thesaurus)

I can't explain the rest of the clue.

(Other definitions for stampede that I've seen before include "Headlong rush of a group in panic" , "Neat rush" , "Uncontrolled rush" , "Sudden rush of a panicstricken herd" , "Panic-stricken charge of cattle" .)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app