Merriam-Webster's Collegiate® Dictionary, 11th Edition
DISPATCH
I. verb see: impeach
Date: 1517
transitive verb to send off or away with promptness or speed,
2. to kill with quick efficiency, deprive , to dispose of (as a task) rapidly or efficiently, defeat 3, intransitive verb to make haste ; hurry , see: kill dispatcher noun
II. noun
Date: 1537
1. a message sent with speed, a news item filed by a correspondent, the act of dispatching: as, dismissal , the act of killing, c. prompt settlement (as of an item of business), quick riddance, a sending off ; shipment , promptness and efficiency in performance or transmission , see: haste