n.
 a sudden panicked rush of a number of horses, cattle, etc. 
▸a sudden rapid movement or reaction of a mass of people due to interest or panic.
v.
 take part or cause to take part in a stampede.
 
  Derivative
  
  Etymology
  C19: Mex. Sp. use of Sp. estampida ‘crash, uproar’, of Gmc origin; rel. to stamp.