### Clue: Wailing woman forces out the first bit of a mule's call (7)
### Answer: BANSHEE 
 ### Explanation: Definition: Wailing woman
  BANS(*forces out*,disbars) + HEE(*first bit*,part of hee-haw,*mule's call*).  Defn:  In Irish folklore, a spirit in the form of a *wailing woman*, who is seen or heard by a family when one of them is about to die.  I doubt if she'll sound anything like a mule though 🙂 .