'Withdrawer' definitions:

Definition of 'withdrawer'

(from WordNet)
noun
An authority who withdraws permission
noun
An individualist who withdraws from social interaction
noun
A drug addict who is discontinuing the use of narcotics
noun
A contestant who withdraws from competition
noun
A student who withdraws from the educational institution in which he or she was enrolled
noun
A depositor who withdraws funds previously deposited

Definition of 'Withdrawer'

From: GCIDE
  • Withdrawer \With*draw"er\, n. One who withdraws; one who takes back, or retracts. [1913 Webster]