Definitions of relinquish:

• verb:   part with a possession or right

  Example: "I am relinquishing my bedroom to the long-term house guest"

• verb:   do without or cease to hold or adhere to

  Example: "Relinquish the old ideas"

• verb:   relinquish to the power of another; yield to the control of another
• verb:   turn away from; give up
• verb:   release, as from one's grip

  Example: "Relinquish your grip on the rope--you won't fall"