1.  withdrawer(n = noun.person) - an authority who withdraws permission;

2.  withdrawer(n = noun.person) - an individualist who withdraws from social interaction;
Derived form verb withdraw₁₀, verb withdraw₆

3.  withdrawer(n = noun.person) - a drug addict who is discontinuing the use of narcotics;
Derived form verb withdraw₃

4.  withdrawer(n = noun.person) - a contestant who withdraws from competition;
Derived form verb withdraw₁₁

5.  withdrawer(n = noun.person) - a student who withdraws from the educational institution in which he or she was enrolled;
Derived form verb withdraw₁₁

6.  withdrawer(n = noun.person) - a depositor who withdraws funds previously deposited;
Derived form verb withdraw₉

   One who withdraws; one who takes back, or retracts. [1913 Webster]