Definition of Extinguish
To bring or put an end to. Onondaga Water Service Corporation v. Crown Mills, Inc., 132 Misc. 848, 230 N.Y.S. 691, 698. To terminate or cancel. To put out, quench, stifle, as to extinguish a fire or flame. See also Cancellation; Termination.
That's the definition of Extinguish in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.