wig1
  
  n.
 a covering for the head made of real or artificial hair.
 
  Derivative
  
  Etymology
  C17: shortening of periwig.
 
  
    
wig2
  
  v.
 (wigs, wigging, wigged)
 informal  - Brit. dated rebuke severely.
 - 
(wig out)
 chiefly N. Amer. become deliriously excited.
 
 
  Derivative
  
  Etymology
  C19: appar. from wig1, perh. from bigwig and assoc. with a rebuke given by a person in authority.