One who refuses to give consent to an agreement in the hope of an improved offer; one who holds out; one who clings to a cause that has been mostly abandoned.
User Defined Definitions
"a negotiator who hopes to gain concessions by refusing to come to terms"
"a refusal by a negotiator to come to terms in the hope of obtaining a better deal"
"the act of hiding playing cards in a gambling game so they are available for personal use later"